Ok, so I got a new Xbox 360 hard drive for Christmas (upgrading from 20GB to 120GB). I have a bunch of data on my old hard drive that I would like to transfer to my new hard drive. Does anyone know about how I would do this?

My main issues of concern are the following types of data:

4 accounts (1 gold and 3 silver)

Significant amount of game data

Several Xbox Live games

Is there any simple way of transferring this data all at once? Or are there multiple ways of transferring the data (you can just transfer the Xbox Live account, but you can't do the same for the game data)?

Thank you for any answers in advance. Also, one final note. I only have a new hard drive. Not a new Xbox. My Xbox is still the classic white, but now I have the black elite hard drive. Thanks!