The midi I used way back was 84 BPM. I originally recorded a midi drum to cassette, then transferred that to ADAT and wrote/played the song on ADAT. I then transferred all the tracks to Sonar (upgrade from ADAT) - including the audio track of the midi drums. I've since redone tracks and had drums done by poeticintensity - using that same click.
Due to cassette fluctations and conversions, you will probably not be able to sync exactly at 84 BPM. Someone else tried it on another song (same conversions) and found that the tempo was off fractionally. You can nudge the track every so often to line it up, or, just play along with the provided click or drum track.
Sorry for the long explanation - does show the learning curve / upgrade path...