While browsing through the forum, did I see a recent announcement from you regarding a Dropdown tutorial? Here's something I cobbled together from an ajax forum - it's pulling data from my database:
http://websitevisual.co.uk/index_menu.php
But I'd need to then implement it into the data assist pages - firstly I would imagine by changing the "display as: menu" in the field labels and form validation - this would need to go into the update and insert pages to (its a car dealership website). I can replace the current SELECT with a MySQLi generated recordset - to make them alphabetical order - hope fully that would be close.
I will have a play around with this over the weekend and see if I can do it - but obviously if you have a tutorial I will follow that!