Remove Magic Button : ctrl+alt+del

[sub3xt1]

i Have situation that someone press three magic button and la..viola.... the server restart.

how can i remove three magic button from being pressed accidently??
i am prevent the server from restarting accidently.

 

[dietmar]

modify /etc/inittab, comment out

# ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -r now