First try the solutions here - click here.
For best results: 1. BEFORE attempting to install NAV/NPF/NIS again, make sure to go to the Win update site & d'load/install ALL updates for Win98. 2. Do the install under 'clean boot' conditions (click here=
if you need to know how). 3. Finally, if there are NO errors on reboot update NAV/NPF/NIS immediately thereafter. Good luck, G