Adsense Problem

Hi.

I added the Forum widgets applications on my forum: http://ownedrpg.c.la
and i added a personnal widget nammed " Ads "

I Put the script of google adsense on the html rectangle.

This is the script:

Code:

<script type="text/javascript"><!--google_ad_client = "pub-7143092282308678";/* 250x250, date de création 23/09/08 */google_ad_slot = "8898070816";google_ad_width = 250;google_ad_height = 250;//--></script><script type="text/javascript"src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>

And i click save.

When i go to my forum, and i look the little Ad think, i see nothing...
Its empty..

Plz help me