I'm obviously very good at screwing up the computer.

I'm on a WinXP Home Ed. on an...eMachines. Yesterday I was trying to take an old game out and when that told me the file's missing (I've been trying forever to get it out, it's one of those School Tycoon game thingies I had forever ago...), I noticed that my sound is gone.

BUT! I think I may know how I may have screwed this up.

I accidentaly clicked Real Tek AC'97 Audio. I DID cancel it, but now my sound's gone...Er...

What'd I do?! How can I fix this? CAN I fix this? Or do I need to wipe out Windows and start over?