IAI ISA Linear Actuator 4-Axis Robot - into a CNC router

Hi everyone,

This is my newbie post so brace yourself..

I just spotted this on Ebay and was wondering if anyone had managed to convert a IAI ISA Linear Actuator BallScrew Rail 4-Axis Robot into a CNC router capable of understanding G-CODE?

http://cgi.ebay.com/IAI-ISA-Linear-Actuator-BallScrew-Rail-4-Axis-Robot-A-/130399544540?cmd=ViewItem&pt=BI_Robotics&hash=item1e5c6b24dc

I've had a look on the net and cant find any info on the built in servo motors/encoders or drivers.
The driver from what I can tell is set up for propriatry X-SEL programing language, which I think is point to point only..

Otherwise is their a way of keeping the built in servos and just buying a cheap driver that can handle G-CODE?

I'd be much appreciated to ANYONE who has ANY idea about this..