Create PHP Script which asks for Email Address (soulnight C)

We have a web site [login to view URL] We have a photo gallery at [login to view URL] On the page [login to view URL] create a PHP script which asks the user to enter an email address Once email has been entered, then popup [login to view URL] Email address is mandatory. Do checking to make sure email address field contains "@" and at least one "." Send the email address to our email. Store email address in our MySQL Database We are using PHP/MySQL on Linux hosted by Godaddy We require all changed files...