right, i remember reading something about the office series about, let me see if i remember this right cause i dont have it installed anymore, but you open up access goto the help, about. then theres like a button in there that is something like information about your computer. this opens up another program and in that theres a run button. i think that this was a way to get trogans running and not get noticed by virus scanners, and its probably fixed by now. but i think that method works in a way that it wont check your privelages so if you can acces the control panel and change admins password you should be all good. also if this guy actualy loged in using Administrator as "his" account he was a moron and didnt really know why its hidden (well in XP pro, i havent actualy used 2000)
good luck from me to, if i think of anything else ill post it