EDIT: How to get rid of this virus :
First, to get rid of the shutdown prompt do this :
Start>Run>CMD, and then type Shutdown -a
Now, do this
1. Disconnect from the net
2. Press Ctrl + Alt + Delete and kill the process called MSBlast.exe
3. Go to Start>Run>msconfig
4. Disable Msblast [You can also do this in regedit but this is safer]
5. Go to C: \Windows\system32, look for MSblast, delete it.
6. Then :Start>Run>regedit, go to edit>find and search for msblast, delete the resultant key to the left which is Auto Windows Update.
7. Go to C: \Windows\Prefetch, delete the msblast file from there.
Restart your system, then go here: http://www.microsoft.com/technet/tre...n/MS03-026.asp and download the appropriate patch.
http://www.filemirrors.com/search.sr...e&size=1291040 XP version
(Information was provided by Del Boy, patch link provided by Forever Zero, (Small fixes by Lord Riff Raff [sorry Daz for editing your post])