Chris,
Yeah, what Kelly said. I really meant for your friend to use (again) the install OS CD.
Yeah, what KPS said. Open Firmware is the absolute way to preclude others from hacking in to the machine. But, be aware that the usual (following) start up tricks will no longer work:
* Blocks the ability to use the "C" key to start up from a CD-ROM disc.
* Blocks the ability to use the "N" key to start up from a NetBoot server.
* Blocks the ability to use the "T" key to start up in Target Disk Mode (on computers that offer this feature).
* Blocks the ability to start up in Verbose mode by pressing the Command-V key combination during startup.
* Block the ability to start up a system in Single-user mode by depressing the Command-S key combination during startup.
* Blocks a reset of Parameter RAM (PRAM) by pressing the Command-Option-P-R key combination during startup.
* Requires the password to use the Startup Manager, accessed by pressing the Option key during startup (Figure 1).
* Requires the password to enter commands after starting up in Open Firmware, which is done by depressing the Command-Option-O-F key combination during startup.
So just be careful. If you mess up, even Apple can’t (or won’t) help.
See Apple Knowledge Base Document 106482
http://docs.info.apple.com/article.html?artnum=106482Harv