I have finally completed building the servers required for my Exchange 2007 test lab. I have used Microsoft System Center Virtual Machine Manager (SCVMM) for virtualizing the lab environment. For the purposes of testing I will have a total of 10 guest machines running on my SCVMM host. The machines include 2 domain controllers, 2 Exchange 2003 back ends, 2 Exchange 2003 front ends, Exchange 2007 servers (1 hub transport, 1 edge transport, 1 mailbox and 1 CAS).
For easy management of the VMs, I installed the SCVMM Administrator Console on my Windows Vista notebook.