I would really appreciate it if someone could take a minute to explain the basics of linking up Reason with Pro Tools. I have both programs working, I can record the MIDI from my interfaces onto Pro Tools. But, I can't get the sounds from Reason to play with the MIDI track in Pro Tools. I have some Rhodes and Melotron sounds in Reason that I want on the Pro Tools tracks.

Here's what I am using:
Pro Tools 6.1
Reason 2.5
Digdesign 002
Mac G4
Kurtzweil Keyboard
Boss DR5