Connecting My Setup

Ok, so ive got Logic Express 7, Cubase SX, Reason 3.0, a microKORG and an MPC 2500, best way to link these together?
Thanks in advance peeps.

You probably want the MPC as the main tool, for sampling and sequencing.
you probably want to use reason for its modules instead of having a rack full of expensive hardware (which is digital anyway).
The microKORG can be used to play basslines and other sounds from reason (using MIDI) into the MPC.
Once tracks are done you can output them into cubase for effects or further equalizing.
And I dunno what logic does.
Use MIDI cables and audio cables to link things.