That's weird.
Most commercial outfits like Dell are giving me the option of 32 or 64 bit XP, and of course, if you assemble your own system, you can do anything you want. It is possible to strip an operating system off an OEM machine and install your own--the added benefit is you get rid of all the "free" crap OEM machines often bundle onto their hard drives. This gets tricky with laptops and some machines that have specialized software or firmware loaded onto their systems.
I punched into Dell's Australia site, and they offer XP on only a limited number of systems--6 to be exact (click on little window at upper right). I don't know what's up with that.
