need help
 

<script type="text/javascript"><!--
google_ad_client = "ca-pub-8085775968520477";
/* FusionGX Cinema 4D */
google_ad_slot = "3720015120";
google_ad_width = 728;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>

i would like to put an ad in my post like this

<script type="text/javascript"><!--
google_ad_client = "ca-pub-8085775968520477";
/* FusionGX Cinema 4D */
google_ad_slot = "3720015120";
google_ad_width = 728;
google_ad_height = 90;
//-->
</script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>

But how can i do that?

I'm not sure exactly what you mean by "in your post" - do you mean you want to post as normal but have an ad in it? I think the only way you could do that would be if the forum allowed html (not recommended) or if you created a bbcode for it.

If you mean you want it to be part of the showthread.php page, then you need to edit the appropriate template and insert that code where you want the ad to appear.

how can i create a bbcode for it? what do i need to fill in?

and my site allows html

not a good idea to allow html for members