configuration programs for PPP dialup.Often, this simply isn't enough for most new users.Several GUI programs exist and can be used to configure your PPP dialup.
One is X-isp, available from http://users.hol.gr/~dbouras/. You may still need to edit the pap-secrets file in /etc/ppp.An other is the Gnome PPP dialer. It comes with Gnome and can be used with no text file editing.
Be sure to put a "*" in the "Remote address" field if it should be set dynamically.Here is a quick guide to setup the Gnome PPP program. First make sure the pppd program is suid root. Then,enter your user name, password and "*" in the remote IP field. Enter the DNS server, and set your IP address or set to dynamic.
This should work for most Internet providers. Check the PPP-HOWTO for a completeoverview of the PPP programs.This is the Gnome PPP interface:
"Windows Linux Tips: Easy PPP dialup"
Reference : techpraveen.com