If Netraverse ever comes out with Win4Linux 5.0, all the problems of Windows XP will be solved for good. Windows will run within a Unix kernel. And Bill Gates will be wondering why he didn't think of it first!
It looks as if Win4Lin 5.0 Workstation Edition is available, per www.netraverse.com/products/win4lin50/index.php. This looks like a lower cost VMWare to me.