Cognos Controller supported enviroments 8.2 -8.3 -8.4
http://www-01.ibm.com/support/docview.wss?rs=3450&context=SS9S6B&dc=DA400&uid=swg27014433&loc=en_US&cs=UTF-8&lang=en&rss=ct3450db2
more usefull Cognos links
http://www.cogknowhow.com/index.php/web-links