New to group and cnc

Hi all,

I just bought a Smithy "Granite 1324" which will arrive next week.
They offer this machine as "CNC ready" but as far as I can tell it
just has predrilled mounting holes. I would like to add the cnc
functionality but I'm not sure where to start. I've read through a
bunch of stuff on the web but I have yet to find anything to "hold my
hand" so to speak and walk me through the process. I'm hoping some of
you on this list can help so I'll start with a few questiions.

1. How do I determine what size motors I'll need?
2. I've read about "stepper" and "servo" motors. I'm assuming the
steppers will be enough for me but I'm not real clear on the
difference.
3. Once the motors are selected what exactly do I need for the rest
of the hardware. i.e. controller, powers supply etc. Esentually how
do I figure out what I need?
4. Once I have all the pieces and parts how do I get it all working
together?

I know there are some turnkey systems out there but I'm on a budget
and I have more time than money and I'm hoping I can put this
together for less than a packaged system. I'll learn some new things
in the process as well.

What I DO have is a spare PC and I'm pretty good with AutoCad.

Thanks for listening and I look forward to learning from some of you.

Jay