My b2evolution Version: Not Entered

Hi everybody,
I'm new on this site,
Actually i'm not able to understand how to change this link on my login page

<div class="loginblock">
<div style="float:left">
<h1 class="logintitle"><a href="http://b2evolution.net/"><img src=forum/rsc/img/b2evolution8.png" width="221" height="65" alt="b2evolution" /></a></h1>
</div>

I want that members on my forum can go to my site instead of b2evolution.net.

Hope that some one will help me.
Thanks
Cesare