I have recently tried to get onto the Fallout website, though whenever I try to get on it just tells me "Date of Birth: Access Denided", though I can get the the Oblivion website easy. Is there anyway I can get on it? Like a Cookie that keeps auto telling me I can't get on?

The website tagged your age as "not age appropriate" for fallout 3.
This information is stored in a cookie, however you appear to be to young as it seems.