[Blind-sysadmins] Upgrading from SBS 2003 to 2008

Hi all, it is about time for me to upgrade our own internal server from SBS 03 to SBS 08. We have had 03 running in a VM under VPC 07 for some time now. Should we still run SBS 08 as a virtualized server? If so what is the most accessible means of doing this, HyperV, Fusion on the Mac, VMWare Workstation, or something else. I loved VPC but I don't think it can work with 64 bit guest systems. Also what host hardware and OS should I use. Any suggestions would be greatly appreciated since sighted help is rarely available around here. Tia Frank