This is what I did and worked fine for me:

*I uninstalled Internet Explorer.

*Shortly after opening Norton Antivirus a pop-up opened which said: Trojan.Startpage found and deleted.(The message I had seen dozens of times and which made it impossible to use the menu of NA or to do any scans).

*Then after a while I opened Windows Explorer and another virus warning (NA) came saying it had deleted a *.dll (in my case knch.dll).

*I then installed IE again and everything works fine again.

I hope this works for other people as well, cause it's a lot easier to do.

Greetings

Unfortunately on XP and I believe 2000, there is no way of Uninstalling Internet Explorer, it is built into the Operating System.

There are easy methods of removing it, Hijack This logs do the trick, its usually an odd BHO file.

My operating system is Windows Xp.

To uninstall Internet Explorer:
-In the Configuration Window open the tab 'Software'
-In the software window choose: Add and remove Windows Components (the 3rd tab from the top.)
-Within the Wizard scroll down and UNCHECK Internet Explorer. Then click next.

If this hadn't worked for me I would NOT have send it here.

I ran Hijack This and did do some cleaning up but that didn't help. I even did some manual editing in regedit. Didn't help. The poblem solution on Symantec Security Response (Trojan.Startpage) didn't work because there was no file, as is described, in my regedit.

Greetings

That doesn't uninstall Internet Explorer, just removes desktop and Start Menu shortcuts. The Internet Explorer folder is still in C:\Program Files and the main iexplore.exe executable is still there, just hidden. You can see it by going to Tools> Folder Options and remove the checkmark from "Hide Operating System Protected Files".

Or even got to Start> Run and type "C:\Program Files\Internet Explorer\iexplore.exe". Internet Explorer appears.

Hijack This (with a few various tools in some cases) will do the job. I don't believe that this fix will actually remove the Trojan, I think in your case it was perhaps successfully removed by Norton eventually, as you said, Norton removed a DLL which was obviously the main DLL for TrojanStartpage. The modifications you made to IE wouldn't have made any difference whatsoever.