2 similar executables to fill a form in a webpage

I need a executable that runs on Windows XP and newer that fills a form in 2 pages I will provide. I don't not require a interface, or form. It will be executed hidden. Per executable: Input: An argument with a path to a text file. The text file will contain the information per line to fill the webpage form. The form contains textboxes, checkboxes, combobox and normal html form controls. The only anoyance is about there is a photo upload handled by a Flash uploader but I don't care how do you generate the post or get the page, etc. Check the attached file for a example input file. No output required besides: deleting the input txt file if everything ended OK.