there is a simple solution
just create .htaccess file with this code
RewriteEngine on
RewriteRule /(.*)/ /index.php?modul=$1 [R,NE]
and place it in root directory
(works only if you have mod_rewrite installed)
if you have not, you can try to use RedirectMatch instead, but there is a problem with ? sigh, and i can't find solution. 🙁