Hi vpxavier,
There are two solution to the problem, use Vista and you are not vulnerable, if using XP there is no cure for this very damaging random buggy file infector that beats Windows File Protection and the Windows Firewall on XP, it destroys beyond repair, so the only solution is to f-disk, format and re-install and keep the system from any peripherals etc. with the file infecting vector on it, the only way to avoid is safe-hex and protection, and you can read here in the forums what safe practices are (non-admin account for online activities, in-browser protection, fully updated and patched OS and third party software, updated malware scanner(s) and active software firewall or hardware firewall solution, that is it in a nutshell, all the other options like SafeMode scanning with special tools come to no avail, well have not been demonstrated in effecto,
polonus