I see UML made it into the 2.5.34 kernel
http://user-mode-linux.sourceforge.net/
From what I get VxD drivers try to get hold of your pci bus and a ton of other stuff . Could this be the start to a fix down the road when it comes to .vxd support ? Will this help when it comes to a Wine Kernel Module ?
cut from there site ---
User-Mode Linux gives you a virtual machine that may have more hardware and software virtual resources than your actual, physical computer. Disk storage for the virtual machine is entirely contained inside a single file on your physical machine. You can assign your virtual machine only the hardware access you want it to have. With properly limited access, nothing you do on the virtual machine can change or damage your real computer, or its software.
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Tom