luceroel:
The reason I pointed you to tutorials is that you didn't provide us with enough info to directly answer your question. For example, you said you have a login page, what type of authentication does it use?
If you use PHP authentication as outlined in the zend tutorial, you need to include the code at the top of every page you want protected. It checks to see if the user has authenticated, and if they have not, prompts them to enter their username/pwd.
I am not sure why the hotscripts link did not work for you - did you click the link to open it or cut & paste it? If you did a cut and paste, it will not work because the bb truncates the link text. You need to click it.
If you are just looking for some code to cut & paste, post your login page code and I will provide it for you. But you are much better off to follow one of the tutorials and learn about the code you are putting into your pages....