I've written a small application I would like to distribute on an RPi. I'd like to find some type of very simple GUI program that would run the first time the RPi is plugged in at the end user's location. This simple GUI would allow the user to set the wifi SSID/password, timezone and a non-routable static IP address. This application is not meant for computer savvy people so asking them to go through the standard RPi GUI setup would be asking a lot (too much).
Any ideas on a program or method for settings these parameters that is dead simple (to set up and to use)?