access denied /administrator

I have a newly installed win2k advanced server machine. I can't install new programs or change network setting such as computer name. I get "access denied", but I'm logged as the administrator. Never had this problem before. What's going on?

 

Is this the admin account you set up when you initially installed the OS? Have to be logged on to this account and not just a user with admin rights.

 

Yes, this is the admin account I setup during setup.

 

Can you go into user manager and look at the rights for the admin account. Sounds like a right isn't set correctly for the account.