I tried this at my office in August. When hosting the VM on my (somewhat old) laptop, raw performance was the issue -- there wasn't enough RAM and CPU to run bo

I tried this at my office in August. When hosting the VM on my (somewhat old) laptop, raw performance was the issue -- there wasn't enough RAM and CPU to run both Win7 and the VM concurrently, and as an intern I couldn't justify the laptop upgrade. When moving the VM to a server, the raw performance issues went away, but network lag became a pretty serious obstacle when using the GUI. In the end, I ended up just SSHing into the VM, and mounting part of its filesystem using Samba. (And assuming that I had been able to get a working graphical environment, it's still a very low standard of "working." There are dozens of little annoyances when you're nesting a completely separate window manager inside your current window manager.)