I need an account system added to my website as a plugin to all of my HTML pages. The account system plugin needs to,register new users, log in current users, remove users who want to disconnect service, and manipulate all of these things via database on my web server.However, I do not know how to program in the PHP language or create and manipulate MySQL databases. I want a program that can create and manipulate the MySQL database automatically for my website and handle also PHP calls automatically.Are there any open source freeware programs out there that i can use? If so what are the names of these freeware? 
php+mysql account management software?
php;looking for a script;mysql;open source
What you're looking for is called  CMS (Content Management System).There are many content management systems that were implemented using PHP\MySql.The three most popular that I know of, are Wordpress (which is used mainly for blogs), Drupal and Joomla. All the three support user-management, plus, there are thousands of plugins that you can freely download and install!