Two points of note here.
Firstly, from an article written almost a year ago by Stuart Bishop at ComputerAndVideoGames.com:
"
Brothers in Arms gets cross-platform multiplayer"
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Thursday 16-Aug-2007 7:58 AM
Gearbox making use of Epic's new deal with GameSpy for PC-PS3 online play support in Unreal Engine 3
Gearbox Software is one of a number of developers to already take advantage of a new PC-PS3 cross-platform online play solution that's been integrated into Unreal Engine 3.
In a nutshell, Epic has licensed GameSpy online tech and squeezed it into its hugely popular UE3 technology, "enabling seamless PlayStation 3 and PC online functionality. Functionality available to Unreal Engine 3 licensees via GameSpy will include cross-platform gameplay, communication tools and competition applications."
Codemasters' alternate-reality WWII game Turning Point: Fall of Liberty is another title to make use of these new features of Unreal Engine 3, which in addition to cross-platform play between PC and PS3 include the likes of GameSpy's online matchmaking service, stat crunching solutions for leaderboards and tournaments and community features.
Does this mean Epic's Unreal Tournament III will feature cross-platform support for PC and PS3 online blasting? Well that's still up in the air. When we spoke with Mark Rein recently he said "It's a feature that technically works today, but whether we enable it or disable it... is still a question".
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And secondly, if you currently have an Xbox Live Silver subscription you will find that Microsoft has
allowed this level of membership to temporarily play "Universe at War", "Shadowrun", and "Lost Planet: Colonies Edition" over Xbox Live for free!
"For a limited time, we are offering free online multiplayer on Xbox 360/Games for Windows titles that offer LIVE cross platform play. This promotion won’t last, so we encourage everyone to take advantage of it while they can. When the new Xbox experience launches this fall all multiplayer gaming on Xbox 360 will be for Gold members only."
Of course, this could just be a glitch that Microsoft have not developed a patch for yet, but in any respect, get online & gaming for free whilst you can.
[And I didn't even mention free online gaming is available for Wii consoles and/or PS3 consoles all year 'round. Didn't I do well?

]
BFN,
fp.