Hello. I am building a forum that will need to display math properly. We are using vBulletin as I believe this site does. I hope to use be able to simply let the users use tex bbcode tags display the math. I was told that this site uses latexrender which is what I am looking at using. The only problem is that the instructions call for inserting the following, but I have no idea where to place it. include_once('/full_path_here_to/latexrender/latex.php'); $latextext=latex_content($latextext); Any help would be greatly appreciated.