EM in Oracle 11g for windows 2008 x64




I just downloaded the trial version of Oracle 11g database and installed it on my Windows server 2008. Now i am trying to configure post installation steps but i cannot see the Enterprise Manager. Also when i type the URL to connect to EM it gives me a certificate error which i install and it still won’t connect me. I have the right address with the correct port number in my URL. Could someone help?

Thank you.