XEN and rPath
It really does only take 10mins to create a XEN dom0 host with a XEN domu guest if you use rPath !
http://wiki.rpath.com/wiki/Xen_Solutions_Using_rPath_Technologies
rPath docs
http://wiki.rpath.com/wiki/index.php/rPath_Linux:Xen_Dom0_on_rPL_HOWTO
http://wiki.rpath.com/wiki/index.php/Xen_DomU_Guide
Xen wiki