Hello All:
I don't think that this question was ever posed to this mailing list (at 
least not that I have seen).  I am trying to set up a testbed for 
provisioning customized VMs.  The only environment that I have root 
access to is on a VM running Scientific Linux 5.5 and I was hoping that 
I could install the Xen hypervisor on a domU so that I can simulate our 
production environment and have vm creation and destroy capabilities 
from inside a VM.  Is this possible using Xen.  I saw this similar 
question posed here
 http://www.linuxquestions.org/questions/linux-virtualization-90/run-multiple-xen-dom0s-on-same-machine-821872/
and it sounds as though they found a way to make this work using an 
evaluation copy of VMWare ESXi.  It would be very nice to know if anyone 
in the community knows of a way to implement this idea using Xen. 
I tried to naively install xen and xen-libs on my VM and encountered the 
same result as described at the above link.  The VM would come up but 
xend would not start.  Is this even possible.  Any advice or insight 
would be greatly appreciated.
David