Ooh, this thread got pushed down, I didn't realize there were replies. To answer you guys for the most part...
I did do it all in SONAR! Percussion and Piano were all TTS-1, and all the strings were done with SI-String Section (and a little use of envelopes, which helps a LOT)
@cpkoch, I've tried brass like this and I have yet to find anything free that will make things that sound realistic enough for use in
this way. EW Quantum and some others have some really high-quality (and high-priced!) synthesizers that would work quite well though.
I'm actually continuing work on a follow-up composition, essentially an evil-theme/boss battle type thing. I'm not sure when I'll be done, but it's coming along well.
Thanks for listening, guys!