Hi Bob,
Nice to see your post on the board.
I use a simple USB to Midi MidiSport 2 X 2
http://www.midiman.com/product.htm manufactered by Midiman. It works great for connecting my KN5000 to my PC & Cakewalk.
If you only need one midi in/out then the MidiSport 1 X 1
http://www.midiman.com/product.htm should meet your needs and is cheaper too.
You can purchase the MidiSport 2 x 2 at zSounds for $79.95 and the MidiSport 1 x 1 for $55.95. I "personally" recommend the MidiSport 2 x 2 model because it is more ruggedly contructed and allows for more midi flexibility. Both should work fine though.
http://www.zzounds.com/searchresults.music?z=995983245183&l=1&b=p&w=midisport&x=15&y=3 Scott
California (SF Bay Area),USA