I've searched a bit and now I've created succesfull the file fixright.php.

This is what I get:
Array
(
[0] => Array
(
[0] => 3
[groupid] => 3
[1] => 1
[authorid] => 1
[2] => 3
[id] => 3
[3] => adminCategories
[property] => adminCategories
[4] => false
[value] => false
)

[1] => Array ...

How can i get back my administrator rights. I've changed the editor rights for a user and now I've lost my admin rights. I can't do anything anymore.
Can I do something on the server with the installation files????
Thanks