I'm not sure that I understand. Are you trying to set up repositories? If so, use the "Download..." button in the "Manage Repositories" dialog (make sure that you are connected to the internet first).

Or are you talking about the "links" in the Maemo Mapper Repositories thread? Because those aren't links you can actually browse to in a web browser. They are templates for actual links (the %d's and %s's are filled in by Maemo Mapper itself). The only reason they are set up as links in the post are so that you can copy/paste them easily. That's not really necessary anymore, though, so long as you use the "Download..." button in the "Manage Repositories" dialog (described above).