<p>Ok, here's a very short and to the point question. When trying to import a virtual PC 2004 Windows 2003 Server VM in VM Workstation 6.0.2 I'm getting an error 'unable to determine guest operating system'. Soo how to fix?</p>

From
here
:
Make sure that that the VM is not currently running in VMware Server.
Make sure that VMware Server does not have a lock on the VM’s files. You have have to stop all VMware Server Services and/or reboot the (VMWare) server.
Make sure you have appropriate permissions to the VM’s files.