Pages not getting published

Recently i’ve purchased a domain and hosting acc. and i purchased a wordpress theme tooo. m=now my problem is that , the pages i create appear in the template but when i click to open it the following error appears

Not Found

The requested URL /product/ was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Apache/2.2.9 (Unix) mod_ssl/2.2.9 OpenSSL/0.9.7a mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.6 Server at doubledee.in Port 80

My domain is doubledee.in