adds the ability to install an Xen or KVM instance from a CD, supports partitioned Xen disks and Xen HVM mode, allows you to edit the boot device for virtual systems, supports changing the media type for virtual disks, adds a notes text box for systems, and many other changes.
does not contain all of the features of the Pro version, and is limited to managing a single Xen host system.
CloudMin can help you manage KVM, OpenVZ and Xen clouds.
VirtualMin have also made available some VirtualMin & EC2 AMIs you can try out for yourself.
Now even Virtualmin (from the makers of Webmin) have Amazon EC2 AMI offerings !