Um try getting a HD thats the same size or bigger then that one, plug your xbox into your PC, and just do a copy and paste. I believe Xboxes use the same HD pc uses.
but seriously, check out the forums at xbox-scene.com. they can help u way more than any of us can.
i used to be an active member at taht site, and i knew pretty much everything about modding xbox'es. but i stopped visiting the site, adn now im dedicated to Computer Forums.