[newbie] Kppp in Red Hat 6.2

[L. H. LOO]

I am the sole user of my Linux box with RH 6.2.
Login as root, I could call Kppp, connect to ISP and surf the Net with 
Netscape.
Login as user- Kmenu->Internet->Kppp- linux asked for root passwd, keyin 
root passwd, hard disk light flashed a few times and nothing happens.
Presumed it is permission problem, I had set all Kppp and pppd related 
files : chmod 777.
Still no go.
Please advise. TIA