A bit late on releasing the news on this contest - but better late then never I guess you could say. Essentially you just play Gears of War, anytime between March 14 and 16. Each day you play versus mode you get 1 entry into the contest, so play all 3 days (like I plan to do) and you get 3 entries.
The prize is pretty impressive: (worth aproximately $770)
- A Three-Month Xbox Live Gold Subscription Card
- Xbox 360™ VIP Accessories Kit
- Xbox 360 Wireless Controller
- Xbox 360 Play and Charge Kit
- Xbox Live Vision
- Xbox 360 Quick Charge Kit
- Xbox 360 Universal Media Remote
- Xbox 360 Wireless Networking Adapter
- Xbox 360 Wireless Headset
- Xbox 360 Memory Unit (64MB)
- Limited Edition Xbox 360 Aluminum Carrying Case
- Xbox 360 Wireless Racing Wheel
- Xbox 360 HD DVD Player.
I played it a bit last night - and I have yet to recieve any of those online achievements….yeah I suck. I would have played more but about midnight my internet connection dropped right in the middle of a game I was actually winning 
view the contest page: Here