Redirection can be achieved in many ways. But try this code in the index file of the website where you want all visitors to be redrected from. And you will achieve what you want.
Make sure that this is the only thing in the file and it must be at the top of the file.
PHP Code:
<?php
header("HTTP/1.1 301 Moved Permanently");
header("http://www.aktivshop.no/epages/Aktiv_Fritid.sf/secdVupgoGRCSs/?ObjectPath=/Shops/Aktiv_Fritid/Categories/10/100");
exit;
?>