Can't find ppp0 interface

[dEINSTEIN]

Tha ithela na rotiso an mporeis kaneis na me voithisei me ena provlima pou
antimetopizo se red-hat 9 me poio allo to netmod.
Eno sindeomai meso seiriakis thiras ttyS0 apo to kppp sto log parathirotou
kppp mou emfanizei cannot find ppp0 interface,deixnei kanonika sindedemeno
sto internet all molis pao na anoixo mia selida einai san na einai
offline.
Se proti matia nomizo pos kati paizei me ton ppp daemon,theoro pos mporei
na min einai egatestimeno.Alla den xero pos na ton rithmiso.
HELP I AM DESPERATE!!!