[Serusers] User Auth, MySql, Radius, NAT (Newbie)

i've read so much lines to understand, but i couldn't find a real example how to solve my question ; * SER runs on RedHat 9.0 (no DNS) * FreeRadius and MySql installed * I can register two VOIP phones with no auth. (with sample ser.cfg) * IP's are follows; SER : 192.168.0.80 VOIP A : 192.168.0.100 VOIP B : 192.168.0.101 PUBLIC IP : 85.96.192.XXX (ADSL ROUTER/GATEWAY) With above config. the system runs but there's no auth made. * I'm gonna place SER Server onto Public IP soon and add other users and they'are all behind NAT (I can do port forwarding from their Routers) * I want to move FreeRadius and MySql onto another System (Windows XP) with IP 192.168.0.50 * I want to use PHPMyAdmin to manage database, and develop a nice webpage for users to manage their accounts etc. How can i do that and what to with ser.cfg Sorry for taking time but i'm new to SER --