Started tracing wires, good news looks like I might be able to use the motor controllers and power supplies. there are 8 digital inputs on the motor boards, closer inspection hints that these might be step and direction pins for each motor! 

Can I,... Should I, even try to use the driver board (controller board, server) or is it proprietary?? only reasearch will tell... maybe a search through napalm (open ftp indexer) will yeild a manual?

Maybe its time to start thinking about the Z-Axis, the question seems to be, move the bed or the extruder and or tool head?