Controllers and drivers for stepper motors

To all who make this group possible, Thank you.

I'm working on building an engraver for my shop. I have the necessary
stepper motors, and what appears to be a 2 axis controller. I'm
needing three perhaps four axis.
It seems the more I read the more off track I get.
What are the necessary items needed to to set this up?

I've seen serveral build it yourself boards, I want to hook this up
via my LPT1 port. Do I need a controller and driver? Or are these
units combined? Also I have Desk CNC, and a demo copy of Turbo CNC.
Anything that can understand G-code would be the type of
controller/driver I would need.

My motors are unipolar (6) lead, my one power supply is 12v

Searching for answers.
TIA
Neil