Another member on here once posted as to how you can do it with out the restore CDs.
I reposted it to help someone out once, but I can't seem to find it ATM. I'm sure if you search hard enough you can find it though.
IIRC, You have to boot into Super-User mode, type in some commands, and then reboot, which will take you to the welcome screen, and you can create another admin account.
Good luck.