Overall Site header, how?

Hello,
I am pretty new to web design. I am learning php and know a bit about html and css. I own a website with multiple parts such as forum, arcade, image upload and chatroom every one of these things uses a different script. I want to know what the simplest way to add an overall navigation bar to all of them. Like a bar that sticks to the top of your screen with links on it, and as you scroll down it moves with you.
Thanks in advance,
Fastboy42

Cnet.com has a nice example of this. They are keeping the footer fixed, but it’s the same general concept.

Would someone be able to link me to a site with a nice looking one? I’ve got the code sorted, I just need to have a look at examples.

Thanks for the reply.
I just don’t know how to make the little bar stick to the top of the screen and follow as you scroll down. Any ideas?
Thanks.

you can just throw in a php include with the menu in the respective files (which ones depends on the scripts you’re using). Also, you need to include the needed CSS in each one as well - how that works depends on the script, Drupal for example lets you add a css file fairly easily in their theme info file and you’d have to ensure that the CSS works across all those scripts.

That’s CSS:

position fixed.