Unlike some of the issues with Vista's release, when you can get your hands on Windows 7, Dynamics GP 10 will already be compatible. Inside Microsoft Dynamics GP has the official scoop. Unfortunately, there are no compatibility plans for versions 9 or earlier. I have no idea if 9.0 will actually run on Win7 but not be supported or if it simply won't run. Then there's the whole question of the new XP Compatibility mode feature still in beta. You may be able run GP on that. Either way, I'm excited about Window 7 and will grab the RTM as soon as it's available to me.