MySql and calling-station-id help please

Dear all, I want to do authentication based on calling-station-id and then to assign a static IP from my database to that requester. SO basically, all the requests coming in will have the same username and password, and I will only identify each of them through their calling-station-id, and then assign a Framed-IP-Address to them. I cannot get the above to work at all, can anyone please give me an idea of how to do the above? Thanks Al -- Internal Virus Database is out-of-date. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.15.29/607 - Release Date: 28/12/2006 12:31