Three Files, Fuj10ca.zip is install, Fuj10ctwain.zip is twain drivers folder, and Fuj10CPCX.zip is PCX drivers folder. Need all three, with the twain and PCX folders inside the main folder for install. W95,98SE, and possibly WXP, also supposed to run in NT and W2k. Don't know about millenium. Drivers on Fujitsu site for 15C and up only may also run 10C.