Wickers,
I started up the computer with the option key after getting OS X and XP installed. I got a boot screen that had a CD icon:
You may not be able to tell, but under the CD it says "Windows". I chose it anyway.
I got to the install screen and it started.
I didn't let it go past loading the initial drivers, etc. But I was able to select my language and keyboard layout. After that, I aborted the install. But I had no trouble at all booting to it by holding the option key and selecting the disc. Looks like bootcamp will work for Linux too.
