To un-archive a news item, login to your admin section, click the dropdown “Add-on Modules” menu in the top menu of your admin section and choose “News”.
The “Add news:” dialog page will appear. This is where your news articles can be written, edited, and archived. Scroll down to the bottom of the page and you will see all your articles. Locate the article you would like to un-archive and press the “Edit” button. In the article edit page, un-check the “Archive” option at the bottom of the edit box and click the “Save changes” button.