It is not a "VMware image" in the traditional sense. It is not the complete SUSE Enterprise Linux 11 operating system.
It is a "virtual appliance" built on SUSE 11 "JeOS":
The idea of the JeOS is to include only those packages that are strictly required for the functionality of the appliance (to keep the appliance size small).
So we expect the addition of extra packages to be problematic.