disable abort button

I need to keep users from interrupting the install. I would like to simply disable the abort button and ability to ctrl-atl-del during the install (unless some secret combo is pressed). I have seen posts for disabling consoles. I have not seen any info on disabling functionality in the graphical side. I would also be ok with locking the keyboard (with an unlock code for admins). I have seen that others are interested in this as well, but I have not found a solution. Any thoughts or pointers would be great. Even info on what controls these features in the install env.. Thanks!