What is the Alt-x back door? I was assured this was set up for me to do when I purchased the system, we are a small pub that in the winter has a pool table in the summer its going to be additional seating. Since going around our retailer who was attempting to charge us over $500 for a 5 min reprogramming of our credit card processor, they are not willing to assist us. We are in a remote location with no remote access, so it requires a site visit at a charge of over $300 just for travel time. Any help is greatly appreciated.