i am using fedora_core 5 i want to convert my LAN Network clint to pppoe

i am running cable internet i have 150 clints
i have fedora_core5 server with squid smb httpd
iptables services
i want to convert my server in pppoe server how to posibale, some therd party softwares provide this service butt i want to use pppoe using my linux box
plz help