Sasser Infections Hit Hard: Colleges and financial firms, including American Express, are cleaning up after the worm. Red Hat aims desktop Linux at Microsoft. The Next Chapter In Electronic Books. Gates calls for 64-bit software support. New 400GB Drive: Speedy new Hitachi desktop hard drive nears half-terabyte territory. Sony hopes to strike chord in online music. No Net Taxes? Why Not? Digital video recorders take off: Consumer choices widen.