I'm having pretty bad difficulties with Windows 7 and Parallels Desktop. I know it's not supported yet, but some folk have it working. I can boot up, but I can't install Parallels Tools. I changed the Configuration to "Windows 2008 Server" like someone suggested in another forum, but fails to boot up. Seems like VMWare are offering a better helping hand than Parallels Desktop - and while it is not supported yet by them, they say that if you use Windows 2008 Server Config everything works apart from sound. So am I best giving it a bash with VMWare's Fusion? 30-day trial for free. But I'd rather try get Parallels working since I paid for it.