Flash,
You may consider the following procedure for creating drum tracks:
1) get yourself a software sampler. Livesynth Pro is one that recognizes SF2 format, not very expensive and preferred by mnany
2) download a number of free drum soundfonts from
http://www.thesoundsite.net/ or
http://www.hammersound.net/ (there are tons of drum kits there)
3) load Livesynth Pro in Sonar and experiment with different drum SF's until you find what you like
4) create a drum midi track by any of the following methods
a) painting notes in the piano roll
b) using midi controller
c) using a piano keyboard proggie and your PC keyboard for input
d) using built-in drumming tools in Sonar
e) using ready-made breakbeats from Midicube, Keyfax or other vendors
f) a combination of the above or any other method
5) render the drum track to audio and tweak to taste.
Drumagog, as far as I understand, is only necessary to correct a poor audio drum track by substituting samples, so why should you make a poor track in the first place? Make it great from the very start!