Get a FREE Month of Xbox LIVE Gold -Sign in and select free one month trial. Make sure you turn off auto renew. This works for MOST old and new accounts. Make sure you pick the option that says $0.00.
This membership auto-renews monthly at the then current price (subject to change) until you cancel. You may cancel at any time. For cancellation info, call 1-800-469-9269 or see www.xbox.com/live/accounts.