Originally Posted by Crimbo

He said reinstall which means he has full access to the machine. No ADMIN would allow a user to reinstall his workstation (Well maybe a really lazy one )
But your fist answer would suffice and take all of 30 seconds to resolve if he is at a corp/business office, unless it HIS office DOH! Most of the time I hear people want a password because they want to see what there gf/bf is doing. In that case install a key-logger, just make sure it is YOUR computer and not hers/his cuz that is illegal. (Not that is would stop most people)