I'm afraid I have bad news for you.
You have been infected with a polymorphic file infector named Virut
. This infection will spread to every executable file in your computer, and unfortunately the only cure for it is to Reformat and Reinstall
Right now, the best thing you can do is to backup, preferably to CD, all your important data, documents, pictures, movies, and songs.DO NOT
backup any applications or installers and DO NOT
backup any files with the following extensions:
For more information on Virut, and why you need to reformat, have a read of miekiemoes blog here
To find out how to carry out an XP Reformat and Reinstall, please see this page
. If you are using Vista, then check this page
Once you have reformatted and reinstalled Windows, have a look at this page
for some useful tips on staying clean, along with links to some freeware to help.
To find out more information about how you may have got infected in the first place, you can read this article
I am sorry I cannot give any better news.