J.D. said:This may help - The person who installed the OS would have used an administrator's password.
cowtown said:I've also found that pulling the hard drive and putting in another system as a secondary drive an effective method of getting at that data. I've done that for people several times who either managed to screw up themselves or had someone leave "unexpectedly".
If the system is a member of a domain then you should be able to manage the system remotely from the server and reset any passwords you want.