Reinstall Windows. Who knows what the virus did. After you reinstall Windows, don't install Norton. It's trash.

[qq=Samuraid]Either that, or a virus set the default association for executable files to itself...thus, if you try and run most executables and programs, the virus gets executed instead.[/qq]

Is it really possible to change the file association for executables? If so, my opinion of Windows has dropped from what I believed to be rock bottom, to somewhere a few feet underground. I thought handling executables was something built into the kernel.