Custom HitBot Automated Web Program Hit Bot

I need a hit bot program designed that can click sponsored search results from a large search engine (the big one). It should function as follows: Allow me to enter a list of keywords and phrases I would like it to search for using this search engine. Use ONLY American proxy servers that will still register click-thrus when searching. Browse the internet and click random website links like a real human being thus loggin cookies and and be undetectable by the search engine. Browse to the search engine at random intervals, with time frame interval set by a range by the user, and perform searches from numerous, undetectable proxies. Needs to be able to locate a particular advertisers' ads and be able to avoid clicking other ads. The program needs to run automatically without user intervention for a set amount of time or until the targets' budget is busted. The program needs to be fairly easy to use with no configuration needed on the user's end except for a few variables. The interface does not need to be pretty but easy to use. If you have designed something similar to this in the past I would like to see some sort of demonstration. Also, I will not release escrow until I have a working version.