I have new affiliate coce. Where do I paste it?

I have a new affiliate code which I’m supposed to paste in the box indicated in the dashboard. Problem is, where do I paste it, after the <script>? at the end, in the html near the bottom. Where? here is a example:
<script type=”text/javascript”><!–
google_ad_client = “pub-xxxxxxxxxxxxxxxx”;
/* 300×250, created 12/3/10 */
google_ad_slot = “xxxxxxxxxx”;
google_ad_width = 300;
google_ad_height = 250;
//–>
</script>
<script type=”text/javascript”
src=”https://pagead2.googlesyndication.com/pagead/show_ads.js”&gt;
</script>