Another Call of Duty 4: Modern Warfare Live Fire Weekend has been announced for Xbox 360 owners. The 3-day-long play & win sweepstakes starts on Friday the 18th at 12:01 a.m. EST, and continues until Sunday at 11:59 p.m.

Shirts, signed posters, Xbox Live point cards, and an Xbox 360 Elite console will be among the prizes handed out on an hourly basis to those who register for the event.

Gamers will also have the opportunity to duke it out with the guys from Infinity Ward on Friday (6-9 p.m. EST) as well as mixed martial artist Jens "Lil Evil" Pulver on Saturday (9-11 p.m. EST). The gamertags for the aformentioned competitors can be found in the full press release after the jump.

MICROSOFT TO INITIATE CALL OF DUTY®4: MODERN WARFARE

LIVE FIRE WEEKEND 2008 OFFENSIVE ON XBOX LIVE®

Battle Online Against Developers from Infinity Ward and

Mixed Martial Arts Phenomenon Jens "Lil Evil" Pulver

Santa Monica, CA – April 10, 2008 – Microsoft Corporation (MSFT) has recruited Activision, Inc., (Nasdaq: ATVI) and Infinity Ward to provide prizes for its newest online offensive: Call of Duty® 4: Modern Warfare™ LIVE Fire Weekend 2008, a 72-hour play and win sweepstakes full of games and prizes beginning on Friday, April 18 at 12:01 a.m. EDT through Sunday, April 20 at 11:59 p.m. EDT. Hourly prizes will be awarded throughout the weekend, including Call of Duty 4: Modern Warfare shirts, Infinity Ward autographed posters and Xbox LIVE point cards. One Grand Prize winner also will receive an Infinity Ward autographed Xbox 360 Elite console and a Limited Edition Call of Duty 4: Modern Warfare faceplate, among other items.  Players can register now through April 17, 2008 at 11:59 p.m. EDT at www.xbox.com/livefire/.

In addition, on Friday, April 18 from 6-9 p.m. EDT, gamers can play with more than a dozen developers from Infinity Ward and then on Saturday night from 9-11 p.m. EDT Mixed Martial Arts phenom, Jens "Lil Evil" Pulver (gamertag: COD4JensPulver) will join the online action.

Add these gamertags to your friends list:

• Fourzerotwo
• COD4Chance
• COD4Justin
• COD4Ed
• COD4David
• COD4Neel
• COD4Geoffrey
• COD4Jon
• COD4Jeff
• COD4Drew
• COD4Ryan
• COD4Todd
• COD4Joel

More details on the Call of Duty 4: Modern Warfare LIVE Fire weekend 2008 and information regarding terms, conditions, and official rules are available on the official event page:  www.xbox.com/livefire/.

Call of Duty® 4: Modern Warfare™ Game of the Year Edition is now available and allows gamers to experience the intense cinematic action of the original, award-winning and best-selling title, and includes a token for the Call of Duty 4: Modern Warfare Variety Map Pack, available now exclusively for download via Xbox LIVE® Marketplace for the Xbox 360® video game and entertainment system from Microsoft.