As said before, unless each piece of virtual kit is on it's own track, you'll be stuck with the whole mix getting the EQ changes.
Here is what I do, but I don't know if you can. I'm not familiar with what you're using.
I use EZDrummer for box drums, and it has it's own built-in mixer. If your program has this, try soloing one piece at a time and bouncing just that piece to a new mono audio track. You can then EQ it by itself. Do this for each piece, and if you want to play around with it you can do the same with overheads, etc.