Just a quick question for anyone who might know...

I'm looking into buying the:

ZBoard Merc Gaming Keyboard / ZBoard Fang Gaming Keypad

... and wondered if anyone knew whether you can run them both at the same time or whether they share inputs. What I mean basically is they pretty much have the same "extra" buttons and im worried if I got both the "forward" key on the keyboard and the "forward" key on the Fang would both have to be set to do the same thing.

Anyone have any ideas?