>Now, one caveat. There are some key combinations that don't work on all machines, but it seems to be more a function of the BIOS intercepting them then anythings else. What those keys are differs from BIOS to BIOS, so you can't be sure.

Barbara,

And how can I catch these keys:

CTRL+HOME
CTRL+END
PAGEUP
PAGEDOWN
F12

Thanks in advance.