Getting keyboard to stop playng more than one synth at a time.

 I have "lost my way" as far as my I/O settings to keep different synths seperate. For example I have Rapture (LE) set up in a project which triggeres from my keyboard. Added Kontakt 4 to the mix and can't seem to set the right I/O configuration - so now even if I highlight the Kontact track and do Imup monitoring there, when I hit keys, it's instrument I have chosen, and the one several track up in the Rapture plays as well.......need advice for set up to have these synths play seperately.
 
 
Thanks  

  If the input echo/input monitor switch confuses you, you can select a diferent MIDI input channel for each VSTi, of course then set the appropriate channel out in your keyboard controller