In a strange twist of fate...after having messed around for a few hours I finally found that these settings were all i needed to let VP3 run and so I can set games and join games and people can see my rooms.
Protocol Port Range Translate To ... Trigger Protocol Trigger Port
UDP 4662 - 4662 - 4662 - 4662
Any 60876 - 60976 - 60876 - 60976
TCP 4672 - 4672 - 4672 - 4672
Needless to say i have also saved a backup of these settings to my hard drive now
