<IfModule mod_rewrite.c>
	RewriteEngine on

	RewriteCond %{REQUEST_FILENAME} !-f
	RewriteCond %{REQUEST_FILENAME} !-d
	#RewriteCond %{REQUEST_FILENAME} !-l

	RewriteRule ^([0-9]+)$ forumdisplay.php?f=$1 [NC,QSA,L]
</IfModule>