Multisearch engine with AJAX

I want a very simple AJAX search engine which gather a keyword search from multiple search engines (Google,Yahoo,MSN). On the front page need to have a search box. Below that search box there must be a tabs with some search engines. When user type a kyword and hit search, all the search engines listed must get the results and when a user click on some of the search engines tab he must see the results. This is like multisearch engine. Also at the bottom of the page there must be a tag cloud with most searched keywords. The tag links must be in seo format - i.e. [login to view URL] - this link is showed in the tag cloud when the user is in the Google tab. I hope you understand what I am talking about. If you have any questions, please PM me. Thanks