[H] HELP! Permissions problem

[Winterlight]

I am running Vista 64 Home Premium. I was trying to remove an Adobe 
file that would not delete. Unlocker doesn't come with 64 bit support 
yet so I was forced to try and take ownership and get rid of it. I 
never got that to work, but somewhere in the process I screwed up my 
permissions so there are now lots of things "I don't have permission 
to use" EVEN when logged in directly as THE Administrator.  Under 
users I have Administrator, I have my user with Administrator 
privileges and it won't let me make any changes to that. I can't run 
scans on drives, I can't use just about anything from the context 
menu. I must of changed some permission and then cloned it to the 
whole system.

What did I do and how the hell do I fix it short of restoring a three 
week old back up.
I really freaking hate UAC
thanks!