No, there is not one specific to 32 or 64 bit but what OS you are using xp, vista/7.
So are you saying that pictures won't open, music files won't open, txt files won't open? If so, then you have major registry corruption. If you are indeed infected, its usually only the exe extension that gets changed. However, boot to safe mode and see if you can open files/programs. If so then it seems you may be infected. I would suggest that you download and run malwarebytes.