Hi,
If I am understanding correctly, GC is not working for you. It collects the money from the customer, which is fine. The part that I have struggled with, and finally given up on, is the call back. It has to get the shipping info from ZC and put the customer info back in to ZC when the sale is completed. It sounds to me like neither of these are working for your set-up. The $1 Fedex charge is because GC is using the flat rate chart you set up manually, (and set up, and set up, every time you reinstall GC!) Not to discourage you, but I think we are working with a "dog". Today I am going to give the mod that runs GC outside of ZC a try, to see if that will work. I can't believe the hours I have spent on this!