CNC PLASMA

HELLO
THIS IS MY FIRST TIME ON THIS SITE. I AM NOT A MACHINIST NOR DO
KNOW MUCH ABOUT CNC. WHAT I AM, IS INTERESTED IN BUILDING A CNC
PLASMA CUTTING TABLE. I HAVE FOUND A SITE THAT LOOKS LIKE IT HAS A
PACKAGE THAT IS WITHIN MY PRICE RANGE (http://www.hobbycnc.com/) . IT
HAS 125 OZ. STEPPER MOTORS IN IT. I WANT TO BUILD A 48" X 48" TABLE.
I DONT KNOW IF THESE MOTORS ARE STRONG ENOUGH NOR DO I KNOW IF THIS
PACKAGE WILL DO WHAT I WANT.
I WOULD LIKE TO BE ABLE TO SCAN IN IMAGES AND TURN IT INTO A
CUTTING PATH FOR MY PLASMA TORCH. I WOULD ALSO APPRECIATE ANY KIND OF
ADVICE ON LOW BUCK TIPS THTA ANYONE MAY HAVE FOR THIS PROJECT. I HAVE
SEEN THE TORCHMATE AND OTHER SITES LIKE IT. WAY TOO MUCH MONEY FOR ME.
I HAVE THE TABLE AND LINEAR MOTION STUFF FIGURED OUT BUT I AM NOT
MUCH IN THE WAY OF COMPUTORS.
THANKS FOR ANY HELP
BILL C