images in xml/xsl transform newbie question

I am trying to store an article in an xml file and use an xsl transform to create an html version of the article. I am having no problems with the article text, heading and etc. however i wish to place a simple image tag that gets the image url from the xml file and outputs the tag to the html. I am a newcomer to xml and have been unable to make this work. any help would be greatly appreciated.