97721 Crawler/Fetcher Modification

Hello I have a website link crawler/fetcher already, its pretty good but it needs some modification. -after link crawl it will pick up first link from the pile, it will then load the page and find first url on this page that contains [login to view URL] inside the link, then it will crawl for links for this new [login to view URL] url, after it retreives all links it will then find a new blogspot url and automatically crawl all links for it too. Checkbox will be available to switch automatic crawling on or off. -Speed improvement of links retreival is also needed, i m looking for a way to improve the speed needed to fetch a number of links. the goal is to automatically and faster crawl for new links. Additional Info: IMPORTANT! 80% of the described task is already done by a programmer who completed almost the whole project but didnt have knowledge to finish it completely, so i require you to add the following new features too. -change proxy after certain number of requests to search engines based on list of given proxies - add aol, lycos, looksmart, teoma, hotbot, ask jeeves to search engines sources - increase speed with which links are downloaded - make that filter returns all links that engine returns when used with inurl: command , now it returns filtered links from first 1000 links