PHP script needed to track url - will pay !!!

I'm not sure if i'm allowed to do this but I have been trying to find the solution myself but i lack php knowledge. I am trying to set up a simple affiliate prgram and I need to be able to track which website a client has come from. They then might visit a few other pages on my site before submitting an enquiry through an asp page. This asp page then sends an email to the client and to me. When a query is submitted i need to know which website they came from originally. I am willing to pay for the code as i dont have time to learn all the php i need at the moment. Any help would be greatly appreciated.
regards,
paul

http_referer?

Undoubtedly, yes, followed by a session / cookie to remember where the arrival linked from. Not perfect because a web user can turn off the referer in his browser so possible referred business wouldn't be allocated properly; better to issue associate IDs to sites that link it and have them add the data to the end of the URL.
But I don't think the original poster is looking for a technical solution - I think he's looking for someone to do the work for him. He says he doesn't have the time to learn PHP himself - if he did, I might suggest the PHP class I'm teaching in January!

So your simply trying to track which website the client came from and not any other data? this would be very easy to do.
Then the refer website could be logged to a cookie on the user's computer. Then your email script could easly call that data.
You could of course always take the easy way out and have a drop down menu that has "where did you hear about this site?"

thanks for getting back to me. so would you be able to do it for me? if so, approx how long would it take and how much would it cost? i would be very grateful because i simply do not have the time to learn the required php and I need this as soon as possible. It would have to be the first option with session and cookie.