EASY ARTICLE OR NEWS SCRIPT FOR ALREADY BUILT WEBSITE

Hello, this should be a simple project for the right person. The website is already together, I just need some sort of news or article system on the site. I know about wordpress and thats fine but the news/article section has to blend in witht he same theme of the website, it has to look the same. Something where I dont have to go into dreamweaver to edit the content everytime. I just want there to be some sort of easy system where I can jsut post articles and the past articles are grouped or archived. For example if I wanted to make an faQ section I dont want to have to keep making the same page over again, I want to be able to write the content for the different sections and be able to group them in a category. I dont care about user comments right now.