i had been infected 3 days ago
my PC stop opening any .exe program saying it is "not valid win32 application"
i had dual boot
win98 worked,,,while winxp all exe(s) not work
i tried to run anti-virus program called(anti-virus&rtojan) from this url
http://www.anti-viruses.net/
(i had the file at my PC)
so i ran it by double click but no luck did not work (the not valid...message)
by chance i right clicked the exe and selected the (run as) command and un-chicked the (protect my computer,,,,) and hit ok the exe worked
and catched 2 files (dll) as i remeber...any way the windows xp worked fine since that
and no problem
so
simply use that url to get the anti virus and then run it as i said
that would solve your problem
good luck