when you set the action to post its secure.. hence why credit card forms use that

the data goes to the CGI script or whatever its linked to... it'd be easier for you to somehow get into the CGI-BIN folder on the ftp site and find the file it links to (by checking source) but you probably cant access it because the permissions are set to only execute

theres NO way that i know of to extract the post data from the browser.. bc it just transmits to the cgi or php script at hand