EZDRUMMER IN CUBASE 3X

Hello,

Is there any grandfather and have Cubase 3x?

I set up my ezdrummer in editor, I am on the right channel.
I draw the truck where the ezrummer channel is.
I enter the Key Editor and there a bunch of keys on the keyboard where
I only want to hear my set drum kit and only see my ezdrummer elements.
What do I do to apply all of those drum parts to my track to easy work on it?
There is so little about Cubase 3X online.
Please help.

AN