I have tried the AjaxEditor in ASP.Net MVC, and have had lots of issues. I then switched to tinyMCE, a free platform independent - open source editor. It is rich with good set of customization features.
Visit the homepage of this editor control @ below link, and see the customization features and demo pages it offers.
http://www.tinymce.com/
And, you can use jQuery functions on this to extract and input information.
See the number of lines of code that gives you this control. It is skinnable.
Add script reference
<script type="text/javascript" src="/scripts/tiny_mce.js"></script>
Initiate the tinymce control on all the textareas in your form.
<script type="text/javascript">
tinyMCE.init({
mode : "textareas",
theme : "advanced",
plugins : "contextmenu,paste,directionality,fullscreen,noneditable,visualchars,template",
theme_advanced_toolbar_location : "top",
theme_advanced_toolbar_align : "left",
theme_advanced_statusbar_location : "bottom",
skin : "o2k7",
skin_variant : "silver",
});
</script>
<form>
<textarea name="mytextarea"></textarea>
</form>
Hope this helps.