[BIG_EFF]

I just got an MBOX 2 and upgraded to Pro Tools 7 (never used the program before). Now I want to know how I should set everything up. Here is a list of my set-up:

Apple IMAC G5 (250 GB HDD, 1.5 GB RAM)
Digidesign MBOX 2 with Pro Tools 7
Akai MPC 4000
M-Audio Oxygen 8 MIDI Controller

I want to start a beat off on the MPC and transfer it to Pro Tools on my computer to beef it up and ad the extras onto it. What is the best way of doing this? What hook-ups do I need to make (ex.: MPC - MIDI'd - MBOX 2 - USB - IMAC)? I don't have a mixer nor do I have the 8 outs, so I'm assuming I will have to record each track separately via the main outs. Am I right? If so how do I set that up? If not, how do I do it so that I can? Pardon all the questions, but I want to be asure. Thanks in advance!