the ONLY way that OEM copy's are supposed to be sold is with a pice of hardware.... You buy a laptop, compaq, Dell, HP, whatever.... it has an OEM copy of windows on it.... because you bought it with hardware.....
The copy I got came with an 8 Meg stick of ram so old I can't do anything with it... technically, that is the hardware it was sold with. you will NEVER be able to by an OEM copy from Best Buy or Circuit City unless it is pre-installed on a PC or laptop.
As I said in my last post, be sure to know if you are getting an UPGRADE, or the FULL version of the software.