Creating Drum Track.

I want to create simple drum track for my song. It's all in Sonar 5 Producer. But I have some problems with it. I would like to ask how to do this in the 'best way' ( to make it sound natural).
So i guess it has to be done in midi track. Then create smth in Drum Map? And then assing a synth for Output. Is that right? Which Synth Would be the best? I have lm-9, Roland GrooveSynth and some other (you gotta know them).

Matt. sorry for my english.

Thanks.