Buying OEM Windows licences without a computer has always been legal. The sale of licenses is covered by the SBLA and not the EULA. If the COA is purple, green, or blue then the software can be resold in the sealed multi-pack or with non-peripheral hardware. If the COA is yellow it can only be sold in a sealed single-pack or a sealed multi-pack, individual units (with yellow COAs) from opened multi-packs can no longer be sold with non-peripheral hardware. OEM Office licences can only be sold in sealed single-packs or sealed multi-packs. There never was an exception for non-peripheral hardware for Office licenses I would like a little clairty on one point please. I found a place thats selling a copy of xp pro OEM. They are selling it in a cd case with the cd key and a yellow COA on the case. Is that still a legal and valid copy for me to buy and use. BTW Thanks for the excelent info.