MacMall offers Windows XP pre-installed on Macs
I have no idea why, but you can have WinXP and your OSX on one machine.

Catalog reseller MacMall on Thursday announced that it’s now configuring bundles of new Apple MacBooks, MacBook Pros, iMacs, Mac Pros and Mac minis with Windows XP pre-installed, either using Apple’s Boot Camp beta software or Parallels Desktop for Mac to help run the alien operating system.

Up until now, Mac users buying new hardware from MacMall have had to do it themselves, and while Apple and Parallels have taken great pains to make the installation process as painless as possible, it’s still fraught with a few perils, and requires you to have your own licensed copy of Windows to install.

MacMall offers the bundles with either Windows XP Home or Windows XP Professional pre-installed.

Read all about it here, courtesy of macworld.com

-Eric