List VMs with RDMs

Hi,

I'm trying to create powershell that will query all virtual machines in a particular ESX cluster and get list of all VMs with RDMs and the details about those RDMs.

I am running vcenter 5.1 update 1a and ESXi 5.0.  I was using the following in 4.1:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2001823

How do I do the same with vcenter 5.1 update 1?  Thank you