Category specific xml search engine for wap browsers

We want a search engine script to display results only ( with links to websites) for specific categories like games, dating, cars, shops, deals , news, etc. The keyword will be pre decided and results to be drawn either via xml or rss whichever can be viewed on a mobile phone. Also, results to be drawn only from wap complaint sites - eg. "games" - visitor should see results from sites which are meant for mobile gaming and are wap compliant. Plus provision for paid link insertion from admin, cache management, speed management ( only text no images ). Only serious bidder - who can deliver fast and have developed wap sites before.