EXE files disassciated

Today, after running the anti-malware program here:

http://www.bleepingcomputer.com/virus-removal/remove-windows-police-pro

I'm not sure if was the malware itself, Windows Police Pro, or the fix - but afterward, no EXE files would run. Not Word, not regedit, not Windows XP SP 3. I fixed it with this:

http://windowsxp.mvps.org/exefile.htm