Microsoft service to link console, PC gamers online announces plans to release the Windows Vista edition of Halo 2 on May 8, which will also be when the Vista version of the Live service goes, well, live. The announcement also has word to expect the PC edition of Shadowrun in June:

LOS ANGELES (Reuters) - Microsoft Corp. on Wednesday said its Live online service, which has attracted 6 million Xbox 360 console gamers, will be open in May to PC gamers who use its new Windows Vista operating system.

The move comes nearly a year after Microsoft Chairman Bill Gates said the company's vision was for "anywhere" gaming that would link video game consoles, cell phones and computers, and is a key step toward reaching that goal.

The PC version of Live will debut on May 8 with the launch of the Windows Vista version of "Halo 2," Microsoft's popular alien shooter game.

In June, Microsoft Game Studios will release "Shadowrun," the first game where Live will support competition between players on the Xbox 360 and PCs.

Live members will need just one account, whether they play on the Xbox 360, the PC, or both machines.

Microsoft offers two Live subscription levels. Silver membership is free and the Gold level, which includes cross-platform play and other multiplayer features, costs about $50 per year.

Microsoft's online gaming service has been a key selling point for its Xbox 360 video game console, which was released in November 2005 and competes with Sony Corp (NYSE:SNE - news).'s PlayStation 3 and Nintendo Co. Ltd.'s Wii for top billing in the $30 billion global video game market.