Ubuntu Out of the Box

Ubuntu's next release is creating quite a stir this week, as Ubuntu makes aggressive strides into the world of high-end servers.  Essentially, the next release of Ubuntu (Feisty Fawn, scheduled for April 19) is the first Linux distribution with Para-Ops and VMI support for optimized performance under VMware.  Of course, Feisty Fawn still supports open-source virtualization packages, like Xen.

If the release works as it should, you could run Feisty Fawn on your Linux server, and install a VMWare layer. From there you could do all the ordinary things VMWare supports, including running virtual Windows machines.