OSX: Creating a new adiminstrator user in 10.5.8
A new administrator user can be created by forcing Apple’s setup to run again.
1. boot the computer and hold the “apple” and “s” keys.
2. Once the terminal comes up release the keys
3. type: /sbin/mount -uaw
4. press enter
5. type: rm /var/db/.applesetupdone
6. press enter
7. type: reboot
8. press enter