Script / Spider to extract HTML from website

Hi all, I need all the HTML pages from this site: [login to view URL] We need you to extract only HTML code for each page in results, This info will be saved in various html files, one for each page. Your spider will connect to site and complete some form field. This is a list of steps will do script, to access information: 1. click on "Boletines Oficiales" link 2. write word "subasta" in inputbox named "Introduzca el t?rmino a buscar" 3. Click on button "buscador avanzado" 4. Select from field "Desde" date of current day (this value depending from which day is executed script) 5. click on top, over button "BUSCAR" We need you to create a script/spider in PHP (or suggest other lang) )which we can run and extract all details. Additionally, we need commands to schedule script from cron. Any questions, just ask. I attest on penalty of perjury that no information gathered will be used in violation of the rules of the source of that information. I additionally attest, that the information will not be gathered or used in violation of the CAN-SPAM act or any other U.S. law.