Having just gone through the exercise of getting QEmu running Ubuntu ‘Desktop’ (not Server) under Windows 7 without installing a bunch of Intel hardware virtualization driver software. I thought I’d share the process, in the hope of helping others. Note that even with the latest software acceleration enhancements (TCG), Ubuntu isn’t particularly usable as a graphical operating system under Windows 7, however it’s perfectly fine to support SSH sessions for doing linux stuff.
Honestly you are far better installing the ‘Server’ edition of Ubuntu if you just want SSH, but I viewed this as more of an ‘experiment’.