You connect any spare input pin you have. You then go to Ports and Pins and Inputs and set up one of the OEM triggers to the pin you have chosen. The last step is to go to the Config menu then to system Hotkeys and enter the OEM code for the function into the box for the OEM trigger you have chosen. From memory 1000 is the OEM for cycle start and I think 1017 is for Go to Zeros. I will post an xml with all the known OEM codes in it in a sticky at the top of the forum in a few mins once I find it on my drive.
Hood