"Once you’re ready to begin developing Xbox 360 games, you will need to sign up for an XNA Creators Club Premium membership.
A Premium membership enables you to create and debug your games on Xbox 360. Also, it allows you to submit your creations for distribution on Xbox LIVE Marketplace.
If you want to create games for Xbox 360, you will also need a computer running XNA Game Studio, an Xbox 360 console with hard drive, and an Xbox LIVE Gold or Silver account. The computer and the Xbox 360 console must be on the same network.
Once you sign in to the XNA Creators Club Online Web site, browse to the Membership page to sign up for a Premium membership, and, if necessary, an Xbox LIVE membership. You will be prompted to sign up for either a four-month Premium membership (49 USD) or annual (99 USD) membership. "