Pull them off the PCs at local stores. Then carefully attach to own system.
PS: Desigined for XP? At least for now, no hardware really is - its more of a driver thing. Oh yeah, if M$ goes and makes DX9 not work for Windows98 - I'm sure that someone will hack a version 9 to work, that should help keep things neat for standards.
I think the "certification" to get that sticker is based on the number of machines you build and that you don't sell any other OS.