Having received a schematic file and PCB file created in Altium, version unknown, I can import both files into Altium 2009 summer. These imports create their own project, therefore I have a PCB project and a schematic project, again they look appropriate and can be edited.

PROBLEM: I have not been able to combine both files into a single project with synchronization between the schematic and PCB so that I can create edits to the PCB via the schematic.