[img src=\"style_emoticons/[#EMO_DIR#]/unsure.gif\" style=\"vertical-align:middle\" emoid=\":unsure:\" border=\"0\" alt=\"unsure.gif\" /] I'm trying to build a database search engine on my site and I want people to be able to select 5 miles or 10 miles from their zip code and have the search engine filter the query results to the mile radius from the zip code... Does anyone know what it takes to build this or if there is something open source that is pre-built that I can use... The professors at my school have no idea how to do this. I’ve seen this done on so many sites like Myspace Please advice...Trying to do this for my Final [img src=\"style_emoticons/[#EMO_DIR#]/unsure.gif\" style=\"vertical-align:middle\" emoid=\":unsure:\" border=\"0\" alt=\"unsure.gif\" /]