Is there any way to run kppp and in general pppd connections in
normal user mode?
I mean I do not want to insert the root password every time I connect to
my ISP ( I have a PC and I'm the unique user.. It is not conformable to
type password every time.......

Thank you

Read the f___ manual at /usr/doc/pam-0.72/txts/pam.txt

the pam module for kppp and pppd are located at
/etc/pam.d/kppp & /etc/pam.d/pppd

For example change /etc/pam.d/kppp

#%PAM-1.0
auth       sufficient   /lib/security/pam_rootok.so
# comment this line for password
#auth       required     /lib/security/pam_pwdb.so
# add this line
auth    required  /lib/secuirity/pam_permit.so
session    optional     /lib/security/pam_xauth.so
account    required     /lib/security/pam_permit.so