Hay guys, In desperate need of some advice!!

Ive got Cubase LE and Ive installed Drumkit From Hell (DKFH) and Ive also baught a 25 key usb midi controller keyboard. The goal is to be able to record me playing the DKFH on the keyboard. At the moment Ive got DKFH up within Cubase and Ive selected the EZdrummer in the drum maps selection so when I press a key on the keyboard DKFH shows that its hitting the drums/symbols but there`s no sound!!

PLEASE help me!!!! Ive been trying to figure this out for like 2 months now! :mad:
Thanks :D
Willo