I think you will find that VoxATC will only work in the PMDG Boeing under certain conditions. The panel config entry is correct as above.1. VOXATC does NOT recognise the *.rte flightplans of PMDG and will only properly function from the FSX flightplan instructions.2. VOXATC uses the FS9 GPS and so that is also required and needs to be added to the PMDG Boeing gauges.3. You therefore require both the FS9 AND the PMDG FMC flightplans to be set up with both operating during flight.VOXATC is an excellent program and the upgrade to version 6 covers all SID's and STAR's. I have found it functions well in FSX and PMDG aircraft; just ensure both flightplans are identical.Have fun.