Which system are you using? (Apple Menu->About this Mac) The Sharing in System Preference has three tabs (one for firewall) in OS 10.2.6

btw, you should be able to delete the exra posts. Click on the Edit button of the post you want to delete, and that should bring up the two delete checkboxes)

Edit...Fixed!! stief : ..deleting the double posts would have deleted yours that followed.. we didn't want that