Anyone have any suggestions on what my limitations might be. I bought a driver board which came with 3; 90 Oz/INCH TORQUE motors. I'm just trying to get my feet wet so to speak. The board and motors can be seen here:
http://cgi.ebay.com/3-Axis-CNC-Router-or-Mill-Stepper-Motor-complete-kit_W0QQitemZ230197188519QQihZ013QQcategoryZ78196QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Any and all comments will be greatly appreciated.

With 90oz motors you are going to be fairly restriced on the size. I am not an expert from everything I have read and seen you are looking at a small hobby sized cnc or a pcb cnc. I wouldn't make anything above 18" x 18" cutting area. You may have a hard time doing some woods. You should be able to do the softer woods, foam, and plastic. You will have to try and make sure you z axis is fairly light weight. Just to put it in perspective, if you look at all of the plans most of benchtop sized cnc's like jgro's plans, or joes wood design are using 196oz motors or 296oz if you want more ipm. If you go to instructables.com and search for cnc there. A guy has complete video instructions on how to build a cheap cnc and should work fine with your motors.