I want to offer a chance to win a free product for everyone that refers new people to my site.

I have heard of the refer a friend scripts but what about one that also registers them to win a prize?

Does the script actually choose the winner or not? If not, how to I choose a winner fairly.

Thanks for any help

Any script like that that could not select a winner. Your best bet is to simply select an entry at random and announce them as the winner. I don't suppose it really matters if it's fair or not.

I agree. Its very unlikely you will get a script which will select the winner for you. As long as you get a script that stores all the entrants in a database (try http://www.hotscripts.com) you could just pick one at random (i'm sure a quick search in Google will come up with a random number generator). If you do get one that stores them as PHP I could put together a quick bit of code to select you a winner if you like.

I just read your message.

I can recommend Turboreferer. The script does exactly what you described.

Check it out.
http://www.turboreferer.com/a/lxqsitnail.html

I can build this script.

Hit me up!

It would be in php. Not hard at all. If you really wanted to you can have cron to activate a php script to randomly pick the winner at any time of your choice.