in reply to Running Scripts Without Users

Your question is difficult to answer, because it could be interpreted many ways. If what you mean though, is say, a user hitting http://www.foo.com/, and you want a counter to get updated, for instance... no cgi script has apparently been run; the user has hit no buttons... This can be done with server side includes. You need to talk to your web server administrator, or if you are that person, read up on SSI...