"Error locating GLOBALS.php. Please fix your settings!"

It's part of the FUDforum base install. You can only use this module if you have both Drupal and FUDforum installed.

i dont find the GLOBALS.php-archive. there is nothing like this in the fudforum-6.x-1.1.tar.gz at http://drupal.org/project/fudforum.

where to go for it?

You get it by installing FUDforum - a prerequisite for this integration module.

Get FUDforum from http://fudforum.org/download.php.
There should only be 5 files (Including install.php which is 7MB).
Go to the folder and select the install.php (eg. http://your-domain/forum/install.php).
After the installation is complete, install FUDforum integration (http://drupal.org/project/fudforum) module to Drupal.
Goto Administer >> Site configuration >> FUDforum settings.
Path to GLOBALS.php: forum/GLOBALS.php.
Works for me.

Remember to set Drupal permissions for the "forum moderator" and "forum user", cuz the forum will overwrite roles of identical usernames and all of a sudden you cannot use your Drupal installation!