Just create a new field as label type and add the follow code:
<link rel="stylesheet" href="/js/jquery-ui-1.8.5.custom.css">
<SCRIPT type="text/javascript" src="/js/jquery-1.4.2.min.js"></SCRIPT>
<SCRIPT type="text/javascript" src="/js/jquery-ui-1.8.5.custom.min.js"></SCRIPT>
<script>
$("#dialog").dialog();
</script>
<div id="dialog" style="display:none" title="Dialog Title">I'm in a dialog</div>
off course you’ll need the jquery, jqueryui and the css files in a path called js in your wwwroot.
This dialog may be usefulll to display some messages to the users and other things …
You can adapt to your needs …
This code will display something like this:
Off course this is just an idea … you can use blank application to write all the html, or other things …