readerorr - thank you again - you know your stuff.
I managed to navigate through above links and have now been able to load all the cameras categories onto my gps unit.
scary stuff.
one more question - how do I get the all the camera POIs displayed on the unit. I can see they are there under my personal poi's and I can see how I store each one individually but how do i store the lot in one fell swoop so they all display on the map.