Add image locations

How can I add image locations to the OPML list?

<outline type="category" title="Blogroll">
<outline text="wordpress" type="link" xmlUrl="" htmlUrl="http://ww.wp.xz.cn/wordpress/" updated=""/>
<outline text="wordpress2" type="link" xmlUrl="" htmlUrl="http://ww.wp.xz.cn/wordpress1/" updated=""/>
</outline>

I would imagine it is like the below?

<outline type="category" title="Blogroll">
<outline image="" text="wordpress" type="link" xmlUrl="" htmlUrl="http://ww.wp.xz.cn/wordpress/" updated="" />
</outline>

Any help is appreciated. I just want to point to the image location.

Thanks

http://ww.wp.xz.cn/plugins/link-manager/