Engine that Allows Pay Per Click

Dear Programmers, Looking for someone to install a PAY PER CLICK script on our site. Looking for your suggestion in terms of the software (PHP, CGI, etc) PLEASE only respond if you REALLY know how to install a WORKING script. We will need to see a sample of one that you have done before. DO NOT RESPOND if you have NOT installed a Pay-per-click script before. We will need to see a SAMPLE with an Admin panel demo. (or something similar to give us the confidence that you know what you are doing!!). (We just wasted time with a programmer who was going to install a simple dating site that he was going to do in TWO DAYS--- IT'S BEEN THREE WEEKS---VERY FRUSTRATING and it is STILL not working) Anyway...I digress... Need the site to work in a similar fashion to Google's Adwords. Everyone knows what a Pay-Per-Click engine does..so we don't have to elaborate Need it installed RIGHT and soon. (There are hundreds of Pay-Per-Click scripts out there..we just need you to find a good one and install it) Please contact me ASAP. Thanks! Mike