Are you running version 3.3.1? If not, you need to modify the search code to work with your version, which means you need to understand how your regular version works first and then look at the differences between your version and the regular version of the 3.3.1 search code. Once you've done that, it should be very easy to modify. If not, then you probably need to beef up your PHP knowledge at
www.php.net and
www.phpbuilder.com because I'm not planning on rewriting this search code until I upgrade my cart which will be in about 6 months. Good luck.
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www.brettbrewer.com
Getting back into x-cart dev after a long hiatus. Modded lots of x-carts from version 3.1.x to 4.1.x. Developer of ImageScaler mod, Pre-login per user coupon mod, Wordpress feed mod, DigitalSubscriptions mod, Phonetic bulk download keys addon for DownloadExpander mod, Serial Number Generator for ESD products, Custom CMS/LMS integrations, external products mod, and more.