Need a Firefox plugin (add-on

We need a Firefox add-on, capable of... 1. grabbing some data from a displayed web page, or from a spreadsheet, or from manually imported list, or a combination of the above, and... 2. performing a few Google search queries (preferably with configurable time delays) on each item from that list. And then... 3. displaying combined data, and... 4. exporting results to a spreadsheet, if needed. There is a similar and more complex FF add-on available for free, but we just need some additional functionality. We'll provide more details to bidders. If there are advantages of doing this outside Firefox, we're open to your suggestions.