Yamaha DTXpress/DTXplorer/DTXtreme

hi everyone , I need light .
I figured how to change the notes of each pad but I'd like to know 
how to do to get each pad played on a different midi channel in the 
sequencer. What do I have to change .Right now everything is playing 
on one midi channel . To tell you the truth it is a little bit of 
luck there, cause I don't know what it is that I have to change . 
Also what changes do I need to make so that I here the sounds of the 
tone generator playing whenever I play the sequencer . Oh I forgot to 
tell you I use Cubase