I am waiting for my new iMac to arrive (switching over from Dell to a Mac with this purchase). I plan on installing XP via Boot Camp on the system when it arrives. The hitch is that I do not have a licensed version of XP at this time (my other copy is installed on my old desktop which will be used by my kids in the future). I have been looking online for full versions of XP Home (don't really need pro). I can get a full version of XP Home SP2 for $199 via Dell, but I also found on CompUSA.com a copy of XP Home OEM SP2.
I assume this is a legal version to purchase and should also install correctly via BootCamp (and Fusion).