dialup probs: kppp doesn't work, system-config-network does

[Olwe Melwasul]

I can dial into my ISP just fine for an Internet connection with 
system-config-network (making the modem "active"), but a kppp dial-in 
will not see past the remote host IP. kppp connects, but is then dead to 
the world; it can't even see the DNS IP addresses of my ISP. Why is one 
working and the other not? I want to use kppp, or some other more 
normal, non-root way to connect.

Olwe