Hi, guys. Just a fast question. When the Windows 8 promotion was in place i took advantage of it and brought a Windows 8 Pro key using my old XP Home license(its legal). Everything is fine and so but i wonder can i remove the old XP COA sticker or i need to keep it if the guys in black come to check if i brought everything legally? After all i keep my Win8 Pro e-mail and receipt, just haven't ordered the back up DVD they offer. Thanks.