XBOX 360 help/info?

Alright, so I bought an XBOX 360 + 4 games + controllers + headset for $150 today. Fuck yeah.

The guy never signed off his account, how do I make my own?

Go to sign into gamertag on the dashboard.
Hit create new gamertag.

Wont' let me sign out... I pressed sign out and it gave me a list of account options...

Go to Xbox.com | Home, under xbox live click join xbox live... Be sure to add me, i'll show you round and if you get mw2, or cod5... I'll hook you up with 10th prestige.
(gt:: WillSnipe4You)

Quit trying to scam him for his xbox live account.