Thank you for your reply. The page confirm2.php looks very similar to confirm.php. I went ahead and tried to implement the code you posted above, but I did not get the redirect to work. I also tried the code from the confirm page without any luck.
I am also not sure the code would redirect correctly. Like on the confirm page customers from Germany should be redirected to confirm.php, and all other countries to confirm2.php.
I would very much appreciate, if you could help me to implement the code?
As far as the Canadian taxes go, I overlooked that all prices are in Euro. So for now I will treat them as regular international customers.