There should be a whole run-down on the TBC provided background map as well as adjusting the map to shift to data.
here is what was handy on the quick:
Maps Help
I believe that you will need a service to uitlize the Web Map Service such as: Open Geospatial Consortium
End of last year there was some scuttle regarding getting it to work: WMS Service - you might engage @M_Hufford as it seems he was able to get some of it to function…kinda
Then there is always the smash on F1 with the WMS dialogue up, its pretty vague as well