Custom login request

If you go to digitaltimeattack.com.

Here’s a basic example of what I am trying to do instead of explaining it. The address is therefore digitaltimeattack.com, not digitaltimeattack.com/wp-login. http://i.imgur.com/SUMaF57.jpg

Key Points

Once logged in it would be great to have the menu options become available. This means they’re not available(greyed out maybe) until reg’d and logged in.

I also have one of the menu options ready to go, forum.digitaltimeattack.com. I want the registration to be unified/single site so that when they click on forum they don’t have to log into that phpbb forum.

Can anyone help?

Thank you