Ad Network for Buying and Selling Ads Directly

We need an Ad Network System similar to the one at [login to view URL] that will be used by blogs for selling ads directly to potential advertisers; - Code should be written in PHP and use MySQL for data - Ajax features with web 2.0 tracking graphics and charts for analytics - Tableless HTML layout with clean CSS - Custom Javascript with encrypted code for ad serving - PayPal payment integration - Multiple Zone ads, example: publishers can make a zone with 3 positions (same ad type) and sell 6 ads that get rotated, or an ad zone with 1 position and 10 ads rotated, etc. Please take the time to look at a similar site called Buy Sell Ads and its features before bidding. It's a banner serving website with an integrated, searchable marketplace directory for banner ads, publishers, and advertisers. Please ensure that you understand the scope of the project before bidding. You will need to create the full working copy of the Buy Sell Ads site, integrate it with Paypal payment and work with our US based tech staff to install on our servers. We will take full ownership of all code and copyrights. ONLY experienced programmers (with work examples) that know how to write clean, commented, well organized code should bid!