I just realized how easy it is for things to go bad in Windows. I am deploying a PC for someone (Windows 7 Home Premium), and just about any application, including the user himself, can change/break file associations. Is there a program to permanently lock down file associations? E.g. I don't want anything to steal my mp3/winamp and html/notepad associations. If not a utility, Is there a registry key I can make read-only? This can't be that freaking' hard! Thanks.