The virtual appliance is distributed in OVF format, which means that you can import it into ESX Server 3 version 3.5 or ESX Server 3i
version 3.5. If you wish to run the virtual appliance on a hosted product, you can use the OVF Tool to convert the OVF format virtual machine to the format you require.
Please note, the requirements for installing this virtual appliance: The VI Perl Toolkit Virtual Appliance can be installed in any of these VMware products: VMware Server, VMware Workstation, or VMware Player.
Please refer section, Installing and Using the Virtual Appliance on Hosted Products" on page 18
http://www.vmware.com/support/developer/viperltoolkit/viperl15/doc/viperl_install.pdf