MIDI Tracks to Drum Machine

[M Offutt]

I'm going to try to be as detailed as possible in this post. I'm not sure that what I want to do is even possible. I am trying to send a Midi track to my drum machine to use the voices from the drum machine back into the recording.
My set up is as follows

ProTools LE 5.3.1
Digi 001
Alesis SR-16 (Drum Machine)
Guitar Pro 4.0
Windows XP

that is pretty much an overview. What I am doing is downloading GP4 tracks and exporting the MIDI tracks. I then import the MIDI tracks into ProTools. I can play the MIDI tracks through the built in synth on the PC and send that audio back to the session no problem. What I would like to do is send the percussion track to the SR-16 and record back the voice from the SR-16.

I am a MIDI idiot at best so I'm not sure this is even possible. I also do not know if the SR-16 can even do this, but it does have MIDI plugs on the back so there has to be something going on there.

Currently I have the MIDI 'out' on the Digi 001 going to the MIDI 'in' on the SR-16. Then the regular 'out' from the SR-16 into a mixer and back into the Digi 001. There does not seem to be a way to send the MIDI to the drum machine that I can see. If anyone has done this, or knows how to do it, or knows that it can't be done, any information you could provide would be greatly appreciated.

Thanx,