Triggering Help

Okay I did a search already I watched some kid's video and I read the book and still can't figure this out

1.MPC2XL
2.Fantom X module
3.Motif ES module
4.Trition E
5.Digi 02
6.G4

Now right now I have everything going into my MPC It's all good I've been making beats and recording everything is great so far.Now here's where I get lost I just got REASON 3.0 now I just want to use it as another sound module I installed it went into the Pref everything is routed to the Digi 02 I fellow what the book tells me Click on IN and it says play the keybroad and I don't hear a thing How do I trigger MPC and Trition to work with this any and all assitance given is greatly appreciated.

i cant remember who is it, but someone on this board made a nice lil site that explains connecting Reason...ill have to find it later

Thanks man