Did you edited the smilies path? Go to forums admin panel > Configuration > Smilies Storage Path, is it modules/Forums/images/smiles? u said it showed the smilies in post and it was it shows the smile... my path for the smiles is http://www.mydomain.de/myspecificfol...images/smiles/.
So either you have edited the smilies path or you chmoded the folder/files wrong.