Computer Administrator Error

Okay, I'll try to describe this as best I can. I dual boot XP and 7 on the same machine, nothing weird just two regular operating systems. I was trying to print up a document on 7 because our XP driver decides not to work sometimes. Anyway in order to access the other partition I had to grant administrator access. Problem is, I no longer have the ability to run XP. It will show the desktop, but will not show anything else. I figure I must have taken admin power away from XP to access it's boot file or something, but I can't figure out how to fix it. Any suggestions?