I noticed when trying out this project that all the associative array indices in the code are of the form $_ARRAY[index], which is actually incorrect and generates an "undefined constant" error when running PHP with error reporting set to E_ALL. The correct form is $_ARRAY['index'].
So far, sCssBoard has all the basic features of a forum. In development right now are mostly two things: administrator/moderator functions and complete BBCode and emoticons.