To add a new post open the newx.xml file. The structure of a post is as follows:
<item href='#' target='_blank'>
<title>Lorem ipsum dolor sit amet</title>
<date>Thursday, June 18, 2009 11:54 AM</date>
<thumb>images/image.jpg</thumb>
<text><![CDATA[Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.]]></text>
</item>
Change the # with the URL of the post. The widget would display just a teaser. Edit the date with your own. Add image for the new post. In the text field add the teaser part of your news.