It took me a bit of time to get the new Cisco MSE VM up and running on my ESXi 5.0 box. I used the vSphere client from an XP64 vm to deploy the OVF template according to the video instructions posed by Cisco on YouTube.
But when the VM import was completed, I couldn't start the VM because the MSE OVA file is configured with 8 vCPUs. The error I received when trying to startup the MSE VM was indicating that I needed to run the command esxcfg-advcfg -s 1 /Cpu/AllowWideVsmp at the CLI of the ESXi server.
I had to do some searching to figure out how to get to the CLI of theESXi box. The solution I found was written up ages ago by Rick Vanover.
I also found out the hard way that you can't have two vSphere clients managing the same ESXi box. If you find yourself facing the error message Call "PropertyCollector.RetrieveContents" for object "ha-property-collector" on "[IP ADDRESS] ESXi failed. that's what's going on there.
Of course, I also forgot what the default username/password combination is for an MSE VM. For the record, the default user ID is root and the default password is password.