Have you tried this ?
You can import a Windows Virtual PC virtual machine and run it in Workstation. Workstation converts the virtual machine from Virtual PC (.vmc) format to VMware runtime (.vmx) format. This feature is supported only on Windows host systems.
Prerequisites
Download and install the Virtual PC virtual machine on the Windows host system.
Procedure
After Workstation successfully imports the Virtual PC virtual machine, the virtual machine appears in the virtual machine library.