I haven't been able to play my 360 in 8 months due to an injury. I had my Gamertag on a memory card because I wanted it to be portable. I'm about to start 360 gaming again but now I have a problem: I've lost that memory card that holds my Gamertag. I've no idea what happened to it. I still have the case for the memory card, but the memory card is not with it. I've moved during my 8 month away from my 360, so it's very possible I lost the card during the move.
Is there any way I can recover my Gamertag? Or do I have to start over again?
I would greatly appreciate any help remedying this situation or if someone can direct me to some helpful info then that'd be great too. Thanks.