Pfc.Hudson

Hi there: Not so much of a newbie to the game ...just to the forums i am. My question is; Is there a place or does somone know where i can get all maps from Rainbow six , Rougue spear perhaps any and all expansions to this ....so that it could be played on ghost recon .Or is there a way to convert them over to Recon? And say if i did get these maps for ghost recon could i play co-op with them? I'd appreciate any help, links, or sites i could get to. Thanks a heap