That's weird, when I used it I remember the ad being off to the side.
Edit- Oh you mean float around the text...
Try putting the ad code inside this:
Code:
<vb:if condition="$show['guest']">
<div style="width:200px; float:right;">
all ad code here...
</div>
</vb:if>
set the width to the actual width of the ad...
If that doesn't work in your posbit/postbit_legacy template move this code:
Code:
<vb:if condition="$post['isfirstshown']">
{vb:raw ad_location.ad_showthread_firstpost_start}
{vb:raw ad_location.thread_first_post_content}
</vb:if>
Directly above:
Code:
{vb:raw post.message}
And try it again.
If that doesn't work simply hit the "Revert Template" button to revert the postbit back to normal. (Or if the template was already customized, just undo the changes above. DON'T REVERT in that case.)