Here's what I am looking for. A simple form that can be posted on my server (php) that can be customized easily with different headers that allows for a login after a serial number is posted. The login would take the user to a success page with the appropriate content. There would be in excess of 100,000 serial numbers. Each batch goes to one location. Each batch will need a password protected admin module for uploading a txt file with codes and managing codes. Each txt file would have a bunch of serial numbers. Once used it would be not be able to be used unless it is reactivated in the control panel back end. It would be nice to have a built in serial number generator that can populate codes going to the URL selected. Example I will need to be able to omit characters so as to not confuse the letter I and 1. I am also looking for a small server load as I don't want to kill the server with 10,000 codes coming in all at one. Also some levels of protections for the serial number so it cannot easily be hacked, and each one can be logged with an IP. At some point I may want to expand the method to collect email addresses during posting of the serial number. Please send bids/questions via PM