If you have genuine Ghost (rather than the ersatz "Norton Ghost" product squatting on the brand in the consumer space), then Ghost Solution Suite 2.5 contains a tool called DeployAnywhere which is similar to the "Restore Anywhere" capability used in the low-end consumer product (Deploy Anywhere started in essence as a port of Restore Anywhere to a more general-purpose codebase).
DeployAnywhere can do a number of things, but mainly it tries to inject the best choices it can find for the mass storage and network driver classes into the target system so that it will boot. VMWare Converter is a great tool, but a process involving DeployAnywhere works equally well for P2V conversion for other virtualization systems such as VirtualBox and Virtual Server.