I want to play CoD MW3 on my pc but my husband play it from xbox 360 (well we already play it together with split screen but we want to play online with xbox live), so if I play from the pc and he from the xbox 360, can we add each other as friends and send invitation to play together? or should I buy another xbox to play together online ? or can we play split screen with xbox live vs another players? well the point is to play together online vs another players! so tell me guys how to!? Thanks in advance!!!