Hey MovieMaker,
I'm pretty new to this too, but from what I have read you will still need to make/buy:
Pulleys and Belts
Stepper Motors (3)
DC Motor (1)
Threaded steel rods
Stepper motor drivers
DC motor PWM Drivers
Arduine/sanguino board
Opto Endstops
You can pick it out of the BOM's at this link :
RepRap BOM
I know that list isn't complete, but its a start