10083 Web Spider

I need a script made in PHP (with or without MySQL) that will do the following: 1. crawl google/yahoo/msn and search for keyword(s) you input 2. get all the pages that contain that keyword(s) 3. get all the forms from those pages and put them in a database (might need to go deep in some pages becouse not all forms will be on first page) 4. get url/form info from database and submit info to all the forms in the database The script needs to be fast and accurate. Thanks.