You might like to try Xen http://www.cl.cam.ac.uk/Research/SRG/netos/xen/ It is not UML, but it's does the same type of job and it's free. Cheers Glen On Wednesday 09 March 2005 6:16 pm, Cliff Pratt wrote: > I'm trying to get UML running and I'm having problems. snip > > Cliff