I registered with the email of [email protected] and password admin (hostname is my hostname) and a password of admin. Once logged in I do not see the admin area.
because i guess you registered from the front end by using (www.yourwebsite.com/register.aspx) so that's why you don't have administrative powers as you registers like any other user,
try to log in by using (username: [email protected] / Password: admin)
in [email protected] username DONT replace your storename as it is a default details for admin, just copy the above credentials and paste it in your login screen AS IT IS and after login, you will be able to see "Administration" option at the top right side of your page.
ok do one thing, try login with the above mentioned credentials and when you click on login button, take a screenshot of your screen and post it here so that i can see what you're getting and what's the issue.