Find the file, System32.exe, on your drive. Then, read your SYSTEM.INI and/or registry to see what's calling it. You can try deleting the call that refers to that file.
IMPORTANT! Back up your registry, or any other file you modify this way, before trying it. The worst that can happen is, you'll have to boot to safe mode to restore the original. Your problem won't be solved, but you won't lose anything for trying.
If you have any utilities like Norton System Works, that may help resolve the problem, too.
Good luck. 🙂