All-

Please help- I've successfully used a G100 for basic movement for several years now, but lately I have found a need to start using more of the output pins.  I thought I would start simple and use Screen 4 to design an easy layout to manually turn on and off the 16 digital outputs, but I ran into a snag- I can't find the OEM codes to assign to the button/LEDs I want to drop into my dedicated G100 screen...  Were there special G100 OEM codes that control/monitor all the inputs/outputs of the G100, or have I missed something?!?!?  Please help! 

So let me ask the question a slightly different way: The G100 has 15 digital outputs.  How do I turn one of them on/off?

As a guess, I'd say just like any other outputs. Assign outputs to your pins, and use VB to activate them.
http://www.machsupport.com/MachCustomizeWiki/index.php?title=VB_Constants_for_Signal_Names