Yamaha DTXpress/DTXplorer/DTXtreme

Hi 

I was wondering about "the drum crash course" by Russ Miller. They 
have released a special dtxpress version of it..
http://www.russmiller.com/products2dscc.htm
i was wondering if anyone tried it... the music cd wich comes with 
it should go to get into the brain of the dtxpress but how?
and does it work with the dtxpress2... 

And one more question, how does one do to record stuff to the 
computer.. i can record the drums into cakewalk but i cant get the 
backing music with it. And then is there a way to covert it to .wav 
or mp3 from midi? i use cakewalk and havent figured that out yet.

happy new year :=)
Andreas