Yeah its a funny setup, we all have and use wireless laptops, have a network printer we would like to use, building isnt good for picking up main router signal so bought an external mag mount wireless aerial, the idea being for the server to do all the work. I did have a t-mobile dongle in at first, used the wizard lazy setup for server so it was 192.168.0.1 then just turned on ICS which worked ok. Now this bt router is running would be great to connect thru that as much better speed. Been looking into it, know in the past when i was IT manager at a high school, we had a microwave link on a 10.10.x.x address that came in from bolton main IT unit and an isa box inbetween that and our internal lans, would it do the same and work for me in this situation? Or even just use sbs2003/8 with isa built in to try and do what i want it too?