[LifesGreatestGift]

I see you have a forum with the ID of 6 at the bottom of a category of 4 forums. The ID needs to be of the main category housing the forums you want the ad under, not the forum ID. So change the 6 to a 1

also, once you have it positoned where you want it feel free to remove the

style="width:728px;height:90px;background-color:#FF0000;clear:both;"

from the div element and just leave

style="clear:both;"

I made it that way so you could see where the ad would be placed without using actual ad code.

Just place your ad code inside the div, and maybe add some padding/margin to the div to make it
look uniform.