PHP Latest News Section Help.

Okay, I am new to the .css area, but I have modded a site from a template on here with it. However, I am wanting to add a "latest news" section on the left side of my page similar to the one in architecture2.

Here is the deal I am runnign into. In the .html file the "news" article looks like this:

<div id="news">
<h2>Latest News</h2>
<h3>02/03/07</h3> <p>If you're looking for beautiful and professionally made templates you can find them at <a href="http://www.templatebeauty.com">Template Beauty</a>.</p>
<p class="more"><a href="http://www.freewebsitetemplates.com">more</a></p>
<div class="hr-dots"> </div>

Now the deal with this is, If I wanted to keep that news article so all links/future .html pages would see it on the left side then I would technically have to go into each page (weither it be 2 or 20) and copy and paste the new code in that section, then re-upload all pages to my hosting service, correct? I am thinking there has to be a better way to do this. Like a way to update the section once and all pages then "grab" the text from a file or something and display it?

If anyone knows how to do this or can offer a better way to update news articles (that are displayed on all pages within a website) it would help alot. Thanks a ton.