Super Admin Permissions - Please HELP!!!

[fgenetics]

I bought a board from a friend of mine and am stuck. I need to get complete access however this is what I get

Sorry, you are not allowed to edit administrator permissions.

If you think you should have permission to access this page, you will need to edit the $config['SpecialUsers']['superadministrators'] variable in the includes/config.php file.

To allow the administrators to access this page, edit the variable to include the user IDs of those administrators should have access, separating each user ID with a comma, like this:

$config['SpecialUsers']['superadministrators'] = '1,25,57';

To allow only a single administrator to access this page, simply add that user's ID with no commas, like this:

$config['SpecialUsers']['superadministrators'] = '1';



Which directory can i find config.php?

I want to add two user names as superadmins

Is this correct?
$config['SpecialUsers']['superadministrators'] = '1';Name1;Name 2

Also what is a good editor for .php files?