SAN FRANCISCO (03/21/2000) - Microsoft Corp.'s $55 Internet Keyboard Pro adds 19 hot keys and two USB ports to a traditional flat 104-key keyboard. Some extra keys control Web browser navigation buttons; others work with your CD player; and two are programmable to open a specified app or document. The Mail key works with almost all POP3 and corporate e-mail programs (including Lotus Notes). Touch-typing was effortless, and the USB ports reduce cable tangling by letting you relocate some hookups away from the PC. I had to look down from the screen to find the right browser navigation buttons, though I liked the CD player controls. The IntelliType software takes up 35MB, but in the age of massive hard drives, that's tolerable. Microsoft; 800/426-9400; www.microsoft.com.