I'll try to answer this for Puzz3D.

First, make a copy of your configuration file as backup.

Now use "Notepad" to open the internet.cfg
(you may have to change the "files of type" option of Notepad to "All files" to see that internet.cfg)

Make changes as what Puzz3D suggested.

Save it. Use the "Save" function, instead of "Save as".

End of the story.