[BirdOPrey5]

i want to show in all of the forum except forum id 46,51,58,69,75,95,97,100,103.

Does that include the first ad too? Because if so you need to re-do the logic in your conditional...

Also you had nothing for the 7th post... Try this, if I understand what you want:

<if condition="(($post[postcount]==1) OR ($post[postcount] % 7 == 0) AND !in_array($thread[forumid], array(46,51,58,69,75,95,97,100,103)))">

Will display the ad in the first post and every 7th post so long as not in the forums listed.

$post[postcount] % 7 == 0 means if the post count divided by 7 had a remainder of zero, show the ad.