on 10.04 everything is autodetected, I'm not shure if that is now for 8.10 as well...
basically you connect the interface, everything gets installed, then I believe you need a reload or even a restart, then there should show up childdevices in webadmin unter climate for each connected sensor with its ID already filled in, as far as I remember you need to set the type ("thermometer") manually and then place it at the floorplan. That should be it.