drop down menu on a form page

recently started evaluating asp runner, i have not been able to figure out how how to create the add page with on of the form selections having a drop down menu. I can create a plain text box, but I need to have a drop down menu to limit entry to only those items. how do you do it with this application? <img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=question&id=2614&image=1&table=forumtopics' class='bbc_emoticon' alt=':blink:' />