i had a client that would program in beatcraft also, there's no midi in beatcraft. terrible. i had him print each track separately and then gogged out some MIDI much like deadnormality ^ stated.
ktdrumtrigger should do the trick... your goal is to print a new MIDI track and then toss the beatcraft track, not send it directly to superior in real-time.
you may want to give reaper a try, it's free to try forever ($60 if you like it) and you would receive significantly better help from us here sneapsters. if you do give it a shot, it has a built-in JS script plugin for printing midi tracks, or you can use drumagog, or ktdrumtrigger, or whatever. to do it in reaper:
use the insert key to import each drum from beatcraft (.wav file) onto a separate track.
get the beatcraft transients on the grid. if there's no time changes, you can just type in the tempo in a clearly located field at the bottom of the screen.
for each track imported, create another new empty track under it that will recieve the MIDI information.
on each audio track, insert whatever plugin you'll use to detect the hits and pop out the MIDI. drumagog, for example.
drumagog requires you to go to the advanced tab, enable midi output, and specify a note. superior will tell you in it's construction interface which note corresponds to each drum. this step is important.
on each audio track, click the i/o button and add a send, and send to its corresponding empty track that will receive the MIDI.
(to clarify: there are no "MIDI" tracks or "audio" tracks in reaper, any track can contain any media type.)
now here's the step that most people don't figure out on their own: arm each MIDI track to record, and set it to record the midi OUTput, not input.
once all the routing and arming is set up, push record and let 'er rip.
following this i'd check on all the velocities and maybe quantize the MIDI.
i'm not sure if there's a way to implode the MIDI tracks all into one, either way you can just put 'em all in a folder track and just route that folder to superior and minimize it to keep them out of the way.