Found somve very interesting links.
Modify the EQ6 Handcontroller and use new software to control from PC.
http://www.freewebs.com/eq6mod
And now for the much better news or those without the hand controller make this circuit and controll the motors without the hand controller.
http://www.freewebs.com/eq6mod/eqdirect.htm
The bad news is the Software is still being developed to make this fully functional as a replacement goto.
Regards
Netwolf.