I can see ways of copying the EEPROMS with a USB device but its hard to tell if mine will be any good for that purpose. Denford wont release it as long as they can sell people USB upgrades as an alternative.

Will need to look into the KFlop vs Smooth Stepper posts. Is there a uk supplier of the KFlop?

I have converted a few denford machines (in the easy way) but the triac will be a different beastie with the atc. i will probably need to use an ethernet controller with all the inputs that will be required for the ATC, my normal breakout boards dont have nearly enough. Have wanted to get one for a while but cant justify the spend at the moment.