Hi, i am new to these forums and i have been looking for a new hardcore FPS game to add to my collection and recently Ghost REcon original+ expansion packs have caught my attention. I am currently buying a complete GR-Island Thunder pack for PC on Ebay. I need to know if the games require CD keys to install because the ebay seller claims the games do not require CD keys (atelast for the Ghost Recon). please reply and thank you