Are you sure Netscape isn't trying to connect to a home page? And if that page no longer exists, you will get the error message.
Or is your Netscape set to open a different home page?
The first time I access the internet using Netscape, I get an error message that view.atdmt.com could not be found. I have run multiple scans, antivirus, spyware, online antivirus, and done a Google search. I deleted cookies and TIF. I'm running Windows XP home on a Dell 8300. I use ZoneAlarm, NAV, Adaware, Spybot, Spyware Blaster and CWshredder. Every scan I do comes up clean. I have cable access using a Linksys router. So far I haven't found a thing to explain what is trying to access the internet. Any clues?