High-tech karma.

Reports that cellular telephones, modems, and computers are being used in the workplace with increasing frequency. How the face of the American economy is changing as consumers and corporations go digital en masse; How American companies, rather than Japanese and Pacific Rim companies, are dominating high-tech markets; Potential problems amid the bullish forecasts for the high-tech sector. INSET: Netscape's big payday (Netscape Communications) by Kevin....