The Money Making Website

This is for everyone, especially those with PHP knowledge:

This is a great little plugin but it doesn't have a search option on the listings page that allows users to search via category drop-down or by keyword.

However there is another plugin called WP-Custom-Fields-Search which I have downloaded and this would work provided someone could develop a bridging plugin to search the table where the listings and categories are stored.

Does anyone have the PHP knowledge to do this? I believe this could be an even more powerful directory just with that seach functionality.