First introduce the image: click [img] and fill in what is requested. If you are ready the HTML for the image appears in the post, like:

<img src="http://b2evolution.net/about/pictures/b2evo-skin-select-shaded.jpg" alt="bridge" title="Logo bridge" />

Now you select all of this code and tick the [link] button. You fill in the URL for the link, click OK and in the post area appears:

<a href="http://www.b2evolution.net"><img src="http://b2evolution.net/about/pictures/b2evo-skin-select-shaded.jpg" alt="bridge" title="Logo bridge" /></a>

You can also do this manually by typing the code similar as what I gave here.

Good luck

Thanks, it´s working now.
The problem was the "</a> in the code, i forgot it