Well,
Actually, if you have Mac OsX Server, you can virtualize Os X Desktop. How? Using Time Machine.
I've never did it, but:
- Install Mac OsX Server.
- Make a Time Machine backup of your host system or any Os X system.
- Share the location of the ackup with the VM.
- Boot your Virtual Machine on the installation disc.
- From the disc, choose the option restore the system from a Time Machine backup.
- And roll.
If your using a hackintosh backup, beware of your eventual modified kext

.