Thanx. Hopefully that will take care of it. But then again, I'll never know when legitimate updates are waiting.
Edit: The .wav file is windowsxpbaloon.wav. I found it attached to system notification, but setting it to none did nothing to stop the annoying crap I have been dealing with. As soon as I set it to none and posted my thanx, it immediately started doing it repeatedly AGAIN! DAMNIT!