Once I got everything set up the way that I like it I started X3 and began to explore. They are faster to locate which speeds up my workflow. When I use X3 and I use the Browser to locate a midi drum file, the Navigation to find the file is cut down. This helps with the browser inside of X3. I copy those Digital Sound Factory midi drum files into the same default location as well. Because I have three add on packs for Session Drummer I have even more midi files for drums. I keep the default locations in tact as well.
Usually I copy all the midi files for Session Drummer into the Cakewalk Content folder under Midi Library/Drums.
I have finally found a little time to explore Sonar X3. Using Session Drummer midi files with Addictive Drums