Karla,
I am sorry. I spoke out of place. The VMware images are to be used for
internal use only. VMware images cannot be upgraded. You must have
the VMware install disks for each DMS version.
So it looks like a fresh install will be need each time you want to do
a Demo for a different customer or simply delete what you configured
for prior customer or set a template demo to use for all customers..
If you need to get the iso image for 5.1 to perform fresh installs, please
contact your local Cisco sales team or Account representative.
Thanks
T.