Avira has a rescue CD to clean a windows installation from a bootable linux CD.
On this page:
http://www.avira.com/en/support/support_downloads.html
download the “Avira AntiVir Rescue System” (the file with the CD icon on the right)
this “iso” image can be copied directly to a blank CD and booted on the infected computer.
It should have options to scan your computer and remove infected files. The image is updated daily and can also update itself if the computer is still connected to the internet.
bfl
cool tool - self ping