The site settings is a link at the top right of the report manager web page. When you go to view your report what's at the top right? If you're an admin you should see Home, My Subscriptions, Site Setting and Help. If you're not an admin you may not see the site settings.
Steve, I don't know how to check the report manager, and more over I am not admin. So like you said, I may not be able to see those things.