-_-; poor snow, you should have use a bootable cd of an anti-virii program and scan it without booting up in winxp and you will be able to save your comp.

by the way do you computer have a 2nd hard disk or a 2nd partition?. that will help if your OS had problem booting up or virii attack. you keep all your stuff on the extra hard drive, program and OS on the main drive.

if you reformat the comp, you won't lose everything