Submitting pdf form


I’ve created a great pdf form online, and I need to figure out how to post the results to a simple database. Emailing the pdf works fine, but some users get erros, so I need another alternative.
I am using acrobat prossional 6. Which “submit a form” action should I use, and I don’t understand what url I should be using? The url of a ready-made database?
Do I need the url to be a cgi script?