Help an old man out.. I assume this requires the use of wordpad or some obscure tool i hardly ever use.
We ain't all sixteen and geniuses..
In case nobody has PMed the solution to Mal...
Open your Windows Explorer and go to your Freelancer Installation folder, then the subfolder "EXE". (e.g. "C:\Programs\Microsoft Games\Freelancer\EXE")
In that folder, there is a data file called "freelancer.ini" (the ".ini"-part of the name might not be displayed, but there are only two "freelancer" files: the .exe that starts the game and the .ini, with the editor/cog wheel-symbol) that - as you suspected - can be opened with the text editor.
Once you open the file, you'll see the fifth paragraph, "[ListServer]". That is where you find the line makjp mentioned above.
Replace said line with the ones makjp has listed, close and safe the .ini and try out if it works.
I hope I could help, and thanks to makjp for the awesome update:)