I have a website providing information to registered users. I already have the login software running which protects some of the information and links to paypal. I already have the search engine running which searches the information according to the users requirements (search string). I need a save search agent that enables users to save the search string, name it, and run it again when they next log in. After updating the site, I want all saved searches to be run against the new data with the results emailed to the relevent user. This is exactly the same as the save search element on ebay where a users saves a search string and if any new item is listed that matches their search string they are emailed the link.