The reports did not change in SP5. We do show the IP addresses in the ESX Server Details page by default if the VM is a node in Orion. Otherwise, we do not pull the IP address from the ESX server, only the MAC.
To get the IP address, the VM needs to be a node in the Orion Nodes table and have the Interface in the Orion Interfaces table. Then we search for the interface MAC address, find the corresponding node and display the IP address. This is why it is not listed under Virtual MAchines in the Fields list. You would need to be managing the VM in order for us to relyably show the IP address in both the UI and have it available in reports.
Please let me know if I can calrify any of these points.