internet connexion fails

First : when Windows begins, Norton puts an error message telling that it's unable to perform Email protection . Second : when the connexion with modem is on, I can't open any web page ; instant message software do not work, p2p can't open ; outlook express cannot get emails and puts the error message 0x800CCC40 ; that message means : Winsock errors :
0x800CCC40 WINSOCK_WSASYSNOTREADY Network subsystem is unusable.
I have Windows 98 2nd ed. ; I re installed windows and Norton , and the trouble still is there.
Norton did not find any virus.
It's only an internet access trouble : the pc works well .
What can I do ?