irongloves

Hello, I have a website which is based on this script http://codecanyon.net/item/php-search-engine/4052196 You can see a demo here: http://searchengine.pricop.info/ What I'm trying to do is to find a way to pre-populate that search form on the homepage based on parameters in the url For example if I redirect somebody to http://searchengine.pricop.info/?boston-flights he should be redirected to the homepage of the website and the phrase "boston flights" should be already filled in the search form. Any idea on how to do that? Please note that the ?boston-flights parameter is just to give you an idea, I guess the syntax could be different as long as I can achieve the prepopulation of the form. Thanks