Of the things to do when visiting that distant courthouse-remember that the purpose of the office is to do the daily business, which often is not to assist you with your research. Be polite, be patient, know what you are looking for and don't come across as the "tourist genealogist" who thinks they "know everything."
Your goal is to get records--remember you most likely don't know anyone there, aren't a local taxpayer, aren't a local voter, etc.
You'll have more luck with a softshoe approach than a brash one.
