ok, chuck i found one Problem by myself...
BBCodes works now... i use the Product "vbAnonymizer"... when i disable this, the BBCodes looks good. But i makes me not happy to disable that one.
The other Problem ist still there: i think, PP uses the wrong url for smilies... ".../photopost/images/smile.gif"
my smilies are locatet "/forum/images/smilies/wink.gif"