I will try the bios route, thanks.
It's not connected to a domain. These were laptops set up by the authority with their image. I am trying to save money by reusing them elsewhere but not using the county image. I have to install specialist software for blind kids. The software will only run on a clean XP install. County are saying "you can't do that, go buy new ones" Crazy when perfectly good machines are sitting here unused and unusable. My probl;em seems to be the lack of access to admin account to make significant changes. I need a backdoor entry here.