Button Monitor C++ help

im trying to figure out how can i create a hook or something to pull the button info.
so in my dll when someone press the f key it does something. any ideas would be great.

i know i need to either create the system or i can pull the existing one from mw2 but i dont know how to do either one and im stuck.

Check the programming section for a good C++ low level keyboard hook..

what about on the xbox version do any of you know of such a function that will tell is a button is pressed.