Microsoft is having a contest to celebrate the launch of ‘Grand Theft Auto IV‘ on the Xbox 360.  To enter all you have to do is verify and enter with your Gamertag for a chance to win tons of great prizes including four grand-prize trips to New York for the launch of the title.  Here’s the full list of available prizes.

• Four Grand Prizes: Four winners will score a four-day/three-night trip for two to New York City to attend the Xbox LIVE Gold Grand Theft Auto IV Launch Party.
• One Hundred First Prizes: Custom Xbox 360 Elite console
• Two Thousand Second Prizes: A Rockstar baseball bat
• Five Thousand Third Prizes: 500 Microsoft Points
• Three Thousand Fourth Prizes: 1000 Microsoft Points
• Two Thousand Fifth Prizes: 1600 Microsoft Points
• Five Thousand Sixth Prizes: One-month Xbox LIVE Gold subscription
• Three Thousand Seventh Prizes: Three-month Xbox LIVE Gold subscription
• Two Thousand Eighth Prizes: One-year Xbox LIVE Gold subscription

Enter now for your chance to win! The page seems to have disappeared.  We’ll have to see what happened.

[Official Rules]