RewriteEngine On
RewriteRule post/(.*)$ index.php?action=view&id=$1 [NC,L]
RewriteRule archive/(.*)$ index.php?action=archive&m=$1 [NC,L]
RewriteRule category/(.*)$ index.php?action=archive_cat&c=$1 [NC,L]
ErrorDocument 404 "/index.php?action=view&id=httperror&error=404"
Order deny,allow
deny from all