Sony, makers of the popular Vaio computers and now selling Windows XP downgrade disks with their new laptop computers!
http://www.sony-asia.com/support/download/228191/sectionfirst?subpage=detail
Sony laptops come with Vista installed, and I spent over $200 to have Vista removed from my laptop.
The Sony Vista to Windows XP downgrade disk only costs $50, well worth the price to be rid of Vista.