Your ads should appear immediately. If you're using Webs.com or a similar hosting company where you build your web pages on line, you may need to insert your ads in a special HTML block. Here's a tutorial I wrote for my site visitors on another subject, but it shows how you may have to do special things to get the code to work:
http://trainzresources.com/orm3/webs_New_sitebuilder.html
