As you haven't got a cbox, I'm having to write you a note, sorry about that. Anyway, the ad you posted on Letters From No One doesn't have an actual link to the site on it and the code for the affiliate isn't going to work.
It should read something like this..
<a href="http://paradiseinhell.forumotion.com?sid=76fad1d28ada4d017b8e30315de566d1" class="postlink"><img src="http://img100.imageshack.us/img100/9732/29008654.gif" border="0" alt="" /></a>
NOW it works... This is the code you need to put into your board wrapper under your affiliates.
<a href="http://z6.invisionfree.com/Letters_from_no_one/index.php?act=idx" target="_blank"><img src="http://img514.imageshack.us/img514/5765/halfowlface.gif"></a>