Web scraping

I need someone to write a script or program that will extract information from a particular Web site that requires our login info to access. Note that we are prompted to change login info about every 30 to 45 days thus the script will have to allow for this and in such away we can alter or perhaps automate. Once in the site, the script would have to navigate to a couple sub menus where eventually it will provide a list of RFQs. Would then have to search 3 fields in an RFQ to determine if this RFQ is of interest to us. If criteria is met, then the script needs to scrape particular data and either send it to us in an email format, excel or perhaps even load it into our Zoho CRM account as a lead. The person that wins this project will be someone who can demonstrate they have done this before and shows they know what I am talking about by making specific suggestions or asking specific questions.