The best manual I can find quickly is
here, but that doesn't mention passcode protection.....
Here's my standard config for you to use as a starting point. I've only included the section from <Menu> onwards:
CODE
Line 14 - <List Text="XBox Admin" Sort="On" Auto="On" Passcode="AYBX"> is the line that passcode protects the rest of the menu. You could also use a keyboard password if you prefer:
<List Text="XBox Admin" Sort="On" Auto="On" Password="Xbox">
...but I find passcode is easier.