Capturing Extra keys on keyboard (like the explorer key)

Hey folks, i have a little problem , some new keyboards have extra keys like PLAY , previous , volume up , volume down , email etc etc.

I need to capture these keys even when the form is not in focus.
I know how to capture the keys that way , but these "EXTRA" keys don't seem to have any ASCII code attached to them :S. or at least visual basic only captures the Keydown and keyup but not with keypress... :S.. any ideas on how to still be able to capture them? :D