I trimmed down x86 Vista Ultimate (dell) and now I've noticed I don't have the Compatibility tab... I seem to have the Application Experience service, so I really don't know what I may have removed that is causing the problem. Anyone know what else this feature is dependent on? It's one thing I do need in Vista. -just found out I'm missing "mshta.exe" I have no idea what I removed that deleted it -replaced it, still not working/there. Removing IE apparently kills it. Is there anything I can do to get it working again, or am I going to have to start a new vlite trim and start from scratch?