Major Nelson got his on a gold copy of Halo 2 for Windows Vista and took GFR Live for a spin. He used the Wireless Gaming Receiver that allowed him to use his 360 wireless controller and wireless headset on his PC.
He successfully chatted and messaged other Live users on their 360s. All in all, he reported a positive first experience. Despite being a Microsoft guy, Major is typically a very honest person so this is good news.
He posted a few screens of Halo and the Live Guide.
I’m not much of a PC gamer these days, but the idea of interaction between multiple platforms really has me giddy. I know Microsoft has a major battle with convincing PC gamers that they should pay $50/year for GFR Live when they are used to their online gaming being free. It’ll be interesting to see how well it’s adopted.