How to use a mini-icon in a address bar???

Guys,
I've got this tip for a website in Joomla 1.5:

"(...) put an icon in the root folder of your site named favicon.ico (16x16pix)and then this html tag in the head section of each page":

<link href="/favicon.ico" rel="shortcut icon" type="image/x-icon"/>

But... I don't know in witch file I should place this html tag...

Is this suggestion correct to CMS 1.7.0?
How to place that html tag, and where?

Ops... I got the answer right now from joomla documentation...

look at: docs.joomla.org/Changing_the_site_favicon

It was a piece of cake...

(before asking... try to read the manual, kid!!!)