Thats pretty simple to write. You will be the only one editing the news right? Then protect the page with .htaccess that you use to add the content.
I was messing around and wote this one in about 5 minutes. then left it for dead. My friend Mark was messing around with the css and stuff trying to make it look good. (he failed)
http://sonzo.modwest.com
Like I was saying. You can drop a system to show content easy. You don't have to worry about security to much if users don't have access to any forms. All you need to protect is keeping them from passing variables in the URL. (turn globals off)
Frag