>What can I do that it works without the "/index.wml"?
You need to edit /etc/httpd/conf/httpd.conf
The line you are looking for is:
DirectoryIndex
Add index.wml to the list therein...
The E-Smith way of doing this editing is to create custom templates in
/etc/e-smith/templates-custom/etc/httpd/conf/httpd.conf
50DirectoryIndex00
&
50DirectoryIndex00PHP
(Copy from /etc/e-smith/templates/etc/httpd/conf/httpd.conf & then edit)
Good Luck

Fran.