Ctrl-Alt-Delete in Windows on Bootcamp
The Macbook keyboard layout maps "Delete" to backspace which effectively makes it impossible to hit Ctrl-Alt-Delete unless you have an external USB keyboard.
The Windows Server 2003 Resource Kit comes with a handy tool called remapkey.exe but if you don't want to download it, just save this code to a .reg file and double click. It maps the right "Windows" key (The right Apple key) to be a "Delete" button. Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Keyboard Layout] "Scancode Map"=hex:00,00,00,00,00,00,00,00,02,00,00,00,53,e0,5c,e0,00,00,00,00