Xbox Live Account transfer HELP!

I need help transfering my account to another console.

I am trading in my 250GB slim for the halo 4 console, but my HDD has to go with it.

What is the best way for me to move my account?
Should I delete my account from my HDD?

I really have no idea what to do and I only have an hour, please help!

Delete it from your profile so the person who gets the console can’t use it and then once you get your new console, you can download it to that console by using the Download Profile option on the Guide.

Thank you, but won’t GAME delte everything that is on the HDD?

> Thank you, but won’t GAME delte everything that is on the HDD?

Sometimes they will, sometimes they won’t, my friend bought a pre-owned 360 recently from GAME, it still had an Xbox LIVE Profile on it.

transfer cable?