Yamaha DTXpress/DTXplorer/DTXtreme

Hello All,

I'm new here.....I am currently trying to Map my DTXpressIII special
kit to tontrack ezdrummer (vst plugin in sonar 6.0) so that i can
trigger the samples, i can get the DTX 
to communicate via midi with ezdrummer, but i'm having a hard time
mapping it so the correct sample is triggered when the corresponding
pad its hit. (i.e.-snare triggers snare sample, hi-hat triggers hi hat
sample)anyone here been through this using ezdrummer? can anyone help
me out?

Thanks,
Joe