Thanks folks!
My main question is really about what gear I'll need. I have a MIDI setup already. I also have Finale. So here are two questions (thanks so much for your patience and help):
(1) Do most of you use a notation program like Finale in conjunction with a DAW? Or do you just do manual input with quantizing?
(2) Will I need more than a sample library, MIDI setup, and DAW? Is there any other hardware needed? Any specific soundcard needed?
As for my background/goals, I'd like to create and produce the sort of tracks featured on ocremix. I simply can't do this with traditional means. So many of the sounds, not to mention the percussion, are really more at home in a sampled world (at least to my ear). I don't care about not having the stuff notated, in other words.
Again, many thanks.
PS. I should note that I'm aiming to do the sort of thing you did, Rozovian, with "Braincooler." I have similar ideas laid out in terms of sections, harmonies (in reduction), but I'm totally clueless as to how to actually make such drum tracks and put the thing together in a DAW context.