I need the administrator account on a 2003 machine to start without a password, or even a session. That is, once the machine is powered on, it should boot into the administrator account and run startup programs without any prompting.
I know that a service could accomplish similar functionality, but I truly need this behavior. Also, can I disable passwords for remote-desktop connections?
EDIT
This is a virtual machine, and I need it to boot into a user account for various reasons. I have startup scripts under the administrator account, but they only start after I have logged in via remote desktop for the first time. I need these scripts to run as the machine boots.
It's unclear what you mean by "...even a session." I think you're just looking for auto-logon functionality, though.
The AutoAdminLogon functionality will get you what you want on the server's console. (The article refers to Windows XP, but it works the same way on Windows Server 2003). Be sure you physically secure the server computer's console.
You can't remove the password prompt for Remote Desktop connections. You really don't want to, either (even if you think you do).
If you tell us what your goal is, we can probably tell you the correct way to get there.
If you just want to control a user without using a password, you could use VNC, but that's a messy way to operate.