Sonar Artist..looking for Drum Maps

just did an upgrade from Sonar HomeStudio 4 to Sonar Artist.  pretty drastic change!  I have EZ Drummer with the Nashville EZX loaded in.  I insert EZ Drummer in a project.. open up the window.. select the Nashville Kit.. then I want to setup the piano roll view with the Nashville Kit Drum Map that I have copied into the folder where the drum maps are.. but for the life of me I can't find how I access Drum Maps.. can anybody help me?
 
thanks
Bill Durham