setting up a proper cue monitor

I am tring to figure out how to be able to just send one deck to my headphones when I hit the button, it still plays through my sound system, I have 2 sound cards at my disposal as well installed and working, I've also tried the various settings in the Cross discover DJ software. Any help or a point to some info on your site would be great thanks.
Also a silly note for a future software update, can you make it do the discover DJ shuts all the lights off on it? the only way to do so is to restart the program ans shut it off again
cheers
Also a silly note for a future software update, can you make it do the discover DJ shuts all the lights off on it? the only way to do so is to restart the program ans shut it off again
cheers