I use Windows 7 in VirtualBox under OSX quite a lot. It's just more convenient than rebooting into Bootcamp for things that work that way. Of course, as a heav

I use Windows 7 in VirtualBox under OSX quite a lot. It's just more convenient than rebooting into Bootcamp for things that work that way. Of course, as a heavy Windows user, I want Aero. It just looks wrong to me without it. I also want my Windows to be as fast as it would be if booted natively, and I even occasionally play games inside VMs. To achieve this, VirtualBox translates the DirectX calls in the VM into OpenGL calls on the host. Rather than reinvent the wheel, VirtualBox uses libraries developed by/for WINE. I also use WINE to run the odd Windows application or game under OSX or Linux. You can look up compatibility ratings of games on the Wine website, and for many it works absolutely perfectly. (For those where it doesn't, I sigh and reboot into Windows)