I have recently downloaded some drawings for a cnc router, but I'm at a loss as to how to actually "control" the stepper motors. I was planning to use a pc as a controller, but I need to know what I actually need as far as hardware, to connect and control the motors to the pc. I have seen ads for pc based cnc controller software. My problem is, that I don't actually know anything about motors, and the electronics involved with controlling them.

Can anyone provide me with some insight?

Check out many of the forums here. Scroll on down the Looonnnngggggg list and I am sure you will spot the one you need.