299079 Simple tracking system

Hi, We would like a simple tracking system for our website. A little about our site: We do a LOT of advertising for our site, numerous advertising campaigns have been set up to get people to our site and signup for our service. We get about close to 30-40 signups a day approx. We also have a referral system implemented, where our own members bring signups to our site. So as you can see, we are getting signups from all over the place. And we would like to organize that. We would like to have a system where we would know EXACTLY where the signups are coming from. Let me give you an example: 1. A typical user from [login to view URL] comes to our website by clicking a banner. 2. He looks at our website, browses around, likes our service. 3. He decides to signup and make his payment. 4. He is now our member 5. In our tracking system....we can see that we have 1 signup from [login to view URL] One possible way we can do this is: I can put a little snippet of code on the main page where all the traffic comes...and I can put the same code at order confirmation page - so the script can match and say Hey! the signup is from [login to view URL] =) I don't know...I am just thinking. Requested Features: 1. The referring URL showing exactly where the signup came from. 2. Date/time would be a good feature 3. #'s of signups from the same referring URL. (so we know which places are good to advertise) More features can be implemented and welcomed. We are on a tight budget. We don't want too much (more features you give us the better). Our budget MAX is US$50.00. Payment will be made instantly upon testing/working of script. We need a good experienced programmer, we need this urgent. So 2 days, I am sure is more than enough time. We need someone who is confident that he/she can do this. Hopefully people with experience in tracking scripts etc... Thank you. Best of luck.