send form by email with image spam controler

Hi, i would like to allow web site users to fill a form when they request information. the purpose is to have something standardized and later on to archive all those request into database. to avoid spammer, i was thinking to use a code image which change to each page refresh in order to be sure that user is human and not a simple robot :-) after that, all data should be sent by web site (maybe a particular email account or function) to email address info@mywebsite.com. is there a simple way to do that or a better way ? moreover where could i find similar example ? especially about image checking... thx -- Alain ------------------------------------ Windows XP SP2 PostgreSQL 8.2.4 / MS SQL server 2005 Apache 2.2.4 PHP 5.2.4 C# 2005-2008