I am creating a website and want to assign my customers a unique referral id at sign up, do I need special software? How does this work. And how do I get the link backs to work? Answer1:I think I understand what your talking about, I have a project site of mine with journal entries, where each entry has its own ID number, I assume this is sorta what your looking for...I wrote my code myself using PHP and a MySQL database, but if your looking for a premade script to do that for you, Im sure there is one out there, but it will be hard to find one that will do SPECIFICLY what you want it to do.The best I can suggest is trying a portal, which is basically a prebuilt dynamic website.One good one I used to use was from http://www.phpnuke.org/Thats the best suggestion I have without knowing specifically what your website is for or what exact features you want.