Whats your forum url? Ill see if there is something wrong with your code.
EDIT: lol, nvm, you posted it already, ill have a look.
--------------- Added [DATE]1290816257[/DATE] at [TIME]1290816257[/TIME] ---------------
You need to find this code in your site somewhere (template or wherever)
Code:
<div class="art-nostyle">
<div style="text-align: left;">
<a title="Visit our Facebook page and become a fan." href="http://www.facebook.com/editgroup.php?gid=170988549588957#!/home.php?sk=group_170988549588957"><img width="150" height="40" title="Visit our Facebook page and become a fan." alt="Facebook Image" src="http://gamergeeks.dk/modules/mod_fuofb/assets/en/find-us-on-facebook-1.png"></a></div></div>
and enter in the new URL for the image I made you. Upload it to your server and change the src=".......png" for the <img code.
--------------- Added [DATE]1290816414[/DATE] at [TIME]1290816414[/TIME] ---------------
It appears your forum is placed in an iframe which is not recommended. You should just edit the header of your site to match your main page.