I am getting ready to move a BPS from a VM to an SBS 2003. I want to do a knife-edge cutover. Does anyone know if it is the same procedure as doing knife-edge cutover as BES. Also is there any special requirements for installing BPS on an SBS 2003 server.

The procedure is the same with VM's

But BPS on SBS does have it fun since it usually is a domain controller.
Read the DOC's well.