I'm making a website that I need one page to be password protected. I will be selling services so what I want to do is have a individual pay through paypal and then I want them to automattically to get a password see via e-mail. I have seen companies on the internet like Auth Pro and Sentry. Does anyone have any advice for me or have heard anything about these companies. I'm looking for a company that requires me to have little knowledge of programming.

you not only need password protection member area you also need billing script.

you can check many scripts in php on hotscripts.

http://www.hotscripts.com/category/php/tutorials-tips/user-authentication/
and
http://www.hotscripts.com/category/php/scripts-programs/user-management/

you not only need password protection member area you also need billing script.

you can check many scripts in php on hotscripts.

http://www.hotscripts.com/category/php/tutorials-tips/user-authentication/
and
http://www.hotscripts.com/category/php/scripts-programs/user-management/

Is there any program that is free on hotscripts that integrates login with paypal

check following scripts, may this help.

http://www.dwalker.co.uk/phpautomembersarea/
http://www.diofant.com/