Anybody have any tips for getting VNC up and running through the above router?

I'm trying to enable either "Back To My Mac" or "Screens" VNC but getting nowhere fast.  

I've checked that uPNP is enables and created a NAT Virtual Server with all ports recommended by Apple and Edovia for their respective services.

Sadly, no go.

I'm a novice at this stuff so any thoughts and tips appreciated.  Other options may be using an Airport Extreme with the Netcomm in bridge mode but I need to explore how that will go with the Genius phone system side.  

Cheers

Darryn