Ya the seller was definately a swindel but then again maybe not a very smart one putting up a pic of the already used COA, lol. Heh, most people take a picture of the COA with the key blacked out. I agree, file a compaint with ebay or PayPal, no need to file with both, every filing is automatically copied to the other organization, but see if you can get ur money back. As far as using the disc, its pretty much worthless w/out a legal COA which you aren't going to obtain without buying a new disc, anyway. I have heard of people getting a replacement license/product key from M$ but I'm not sure of exactly how.