Instructions
Downloading Rockband 2 Songs
Connect your Xbox to the Internet.
Place the Rockband 2 game inside the Xbox.
Turn the Xbox on.
Choose "Get more songs."
Choose "Rock band music store."
Review the various songs in the music store. Once you've located a song you wish to download, choose "Purchase."
Choose "Confirm Purchase." The songs will begin to download.
Purchasing Microsoft Points
Navigate to the Xbox account web page. Using your Windows live ID, sign into your Xbox account.
Choose "Manage payment options."
Choose "Add a new credit card."
Follow the directions to add your payment information. Once the points are purchased, the credit will automatically be applied to your Xbox LIVE account.