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Presents answers to queries related to computers and other high technology services. Factors that should be considered in buying a laptop; Method that can be used to remove the message about password expiration in the Windows XP Professional; Functions of Bluetooth in simplifying the use of iSync.

Highlights the Sony Vaio VGN-U750P computer from Sony Electronics Inc. Features of the device; Capabilities of the product; Price of the product.

Presents answers to queries related to computer technology. Method of transferring files and settings from an iMac with Jaguar to an iMac G5 running Panther; Functions of Ethernet in digital subscriber line systems; Ways of printing electronic mail messages using Outlook 2000 and Windows XP Home.

Reports on the exhibition “Retratos” at El Museo Del Barrio in New York City. Schedule; Description of art works in the exhibition.

Answers three queries on computer-based technology. Information about Safe Mode boot; Software for handling the recording and audio editing chores; Suggestion on the use of an external floppy drive.

Presents computer technical support answers to questions. Reason why some compact discs burned on the computer refuse to play on the car stereo; Phishing is the practice of sending counterfeit electronic mail messages to get Internet users to supply personal information; Spammers forge their return addresses and make spam recipients unable to reply.

Reports that the PCS Vision Picture Phone PM-325 mobile cellular telephone from Sprint and LG Mobile Phones has a movable keypad panel that slides down to reveal a color display. Digital camera with 8X zoom; Embedded antenna; Bluetooth wireless technology; User option to record their own ring tones; Voice memo recorder.

Presents a question and answer advisory regarding the use and features of the Internet. Strategy for locating song files managed by Apple’s iTunes program for Windows on the hard drive; Clarification on commercially available computer protection software programs compiled in a single package; Options for free electronic-mail programs for Windows other than Microsoft’s Outlook Express.

Features the hand-held video game console called the Nintendo DS. Design of the unit to employ double screens in a clam shell case using two microprocessors to handle colors and graphics; Offer of navigation controllers, touch screen and thumb pad control systems; Aim of the developers to increase the players options to interact with Nintendo games; Size; Resolution; Types of microprocessors used; Incorporation of a wireless networking function.

Answers queries relating to information technology. Programs that synchronize files between laptop and desktop computers; Trouble shooting steps to fix the hissing sound common to digital subscriber line service; Definition of File Transfer Protocol.

Features the Contribute 3 program developed by Macromedia Inc. for dedicated eBay iNC. sellers looking to improve their online storefronts. Templates; Visual tools.

Answers queries on using Microsoft Corp.'s Windows operating system. Complaint of Windows users about opening attachments sent from the Mail program in Macintosh OS X; Compatibility issue on using Acer 3300U scanner in a computer running Windows XP.

Answers questions on computer-based technology. Way for e-mail messages not to be blocked by spam filters; Remote Procedure Call on a computer; Difference between the RGB format and the CMYK format for saving photos.

Introduces the Instant Music analog-to-digital audio converter box from ADS Technologies. Conversion of music played on audio format using any digital music player; Connection to computers; Recording and editing software.

Answers questions related to computers. Difference between a repaired virus and a quarantined one; Meaning of Accelerated Graphics Port; Message about participating in a customer experience program after installation of Microsoft Word.

Presents answers to queries related to computers as of August 19, 2004. Capabilities of the firewall protection of Microsoft Corp.'s Service Pack 2 for Windows XP; Windows operating systems that are compatible with iPod.

Highlights the C3500 tablet computer from Averatec. Features of the computer.

Introduces the LG VX7000 video-enabled wireless telephone. Features and functions.

Features the Med-InfoChip, a keychain-size USB drive from MedicAlert that comes with its own software to create a complete medical profile of users right on the drive. Key features and specifications; Availability information; Price.

Answers several questions on computers and computer software. Adding photographs to a Microsoft Word document; Printing electronic mail messages received through Outlook Express 6; Playing radio broadcasts on the computer.

Responds to questions concerning computer-based technology. Internet services that work with the Mac OS 9 operating system; Significance of a system error message that occurs in the Windows XP operating system; Meaning of the terms “upload” and “download.”

Reports on Apple Computer Inc.'s release of a revamped iPod digital music player in the week of July 22, 2004. Ease of navigation; Battery life; Enhancements made to the product; Capabilities; Price.

Features the KarView portable monitor. 14.1-inch liquid crystal display screen; Connection to DVD players, videocassette recorders, desktop computers and video game consoles; Price.

Replies to questions on computers and cellular phones. Retention of Internet bookmarks with move to different web browser; Overheated cellular phone battery; Factors which affect speed of Microsoft Word program.

Features the Micro-Vault Pro portable computer drive from Sony. Inclusion of Auto Sync software; Synchronization of multiple folders with personal computers; Greater storage data than most flash drives.

Provides on overview of the important office supplies required by the computer printing system. Consideration of the type of paper suitable for use by color laser printers and photocopiers; Citation of the paper's features of thickness and degree of whiteness; Toner requirements; Consideration of Ethernet cards as add-on.

Compares the features of four brands of commercially available laser printers. Difference between a laser and an ink-jet printer; Consideration of the pros and cons of the Hewlett-Packard Color LaserJet 2550L, the OKI C5150n, the Samsung CLP-550 and the Xerox Phaser 8400; Resolution; Computer system compatibility with operating systems; Price range; User friendliness; Ethernet networking add-ons; Set-up difficulty; Print speed; Image quality.

Presents a question and answer advisory regarding digital video discs (DVD) and digital technology. Clarification on the role of compressions formats in the difference between the amount of contents in commercial DVD products and home videos; Explanation on the identity and function of a Bayesian filter; Elucidation on the amount of power needed to run U.S.B. peripherals using U.S.B. keychain style drive into keyboards.

Features the MP3Run package model music system from Philips Electronics and Nike. Design of the system to provide music to joggers and runners by using a digital audio player capable of playing MP3 and Windows Media Audio formats and a pedometer which beams data to the player via Bluetooth connection.

Features Apple Computer Inc.'s Apple AirPort Express mobile base station, which plugs right into an electrical outlet and has jacks on the underside to connect a broadband Ethernet cable and a USB cable. Audio jack; Price; Contact information.

Presents answers to questions about computer-based technology in the United States. Meaning of the message 'Runtime Error has occurred' when using Internet Explorer for Windows; Defragmentation of a Mac Operating System X system; Playing of DVD-RAM discs on a regulator DVD player.

Discusses the discovery of a worm in wireless mobile telephones in England. Information posted by security software firms about the Cabir worm; Types of cellphones that the worm affects; Spread of the work from phone to phone by means of the Bluetooth wireless technology.

The article presents questions and answers related to technology tips such as what happened to free iTunes Radio service by computer maker Apple and another on how the speed test for free online broadband works.

The article presents questions and answers related to technology including how to retrieve text messages from iMessage service for iPhone and how to create a website.

The article presents questions and answers related to information technology such as how secured a computer would be through using Public Network setting of Windows 7 operating system and whether time and date could be seen on pictures taken with iPhones.

The article presents questions and answers related to technology including refunds for apps at Google Play store and the replacement of cord for a laptop charger.

The article presents questions and answers on topics including erasing Internet passwords, and adding subtitles to videos.

The article presents questions and answers related to technology which include how to find the DVD player program for Windows 8 and the importance of update notices from Flash Player.

The article presents questions and answers related to technology including how to save a picture of computer's screen in Microsoft Windows 8 operating system and how to change the notification sound from the Facebook application.

The article presents questions and answers on the need to use the Apple Bluetooth keyboard with an Apple TV and website security.

The article presents questions and answers related to computer-based technology including security threats in Java Web browser, cyberterrorism and transfer of iTunes library from a desktop computer to a laptop computer.

The article discusses the release of Apple Inc.'s Passbook app and outlines the features of the mobile device application such as the storage of customer loyalty cards' digital versions.

The article presents questions and answers such as keeping the child form roaming by the videos on the Kindle Fire high-definition (HD) tablet and the wanting to have caps lock available on the iPhone.

The article presents questions and answers related to smartphones which include how to make the text bigger in the iPhone mail application, and how to change the wrong dates in pictures when transferred through the Picasa program.

The article presents questions and answers related to personal technologies such as how to manage wireless mouse in iMac and the possibility of returning Microsoft Office 2010 when Microsoft Office 2013 arrives.

The article presents questions and answers related to the technical support and guide for downloading iOS applications and the ways of converting PDF computer file format to Microsoft Word.

The article presents questions and answers on how to return to Microsoft Windows 7 operating system and the name of a little purple microphone that appears on a screen powered by a Mac operating system.

The article presents questions and answers on how to share Apple TV to access iTunes account and on how to get rid of a person from a LinkedIn invitation.

Q. Apple killed off the service, but I still have this iDisk icon in the list of drives in my Mac's window. It gives me an error every time I accidentally click on it, so can I just remove it? [ABSTRACT FROM AUTHOR]

The Stickies application, for making virtual Post-it notes on the Mac OS X desktop, is a great way to store little bits of information in plain sight. But if copying and pasting text into an open note seems too slow, a keyboard shortcut that works in programs like Safari can speed things up. Just select the text from the Web page or document on the screen and press Command-Shift-Y to pop the selected text into its own new Stickie note. Pressing Command-Option-F on a selected note makes it float above all the other open windows. Personal Tech invites questions about computer-based technology to QandA@ nytimes.com. This column will answer questions of general interest, but letters cannot be answered individually. [ABSTRACT FROM AUTHOR]