Emu XL-7 & MP-7 User's Group

Hi there. I am primarily just a musician who wants to do recording 
of my material using this XL-7 I purchased a few months back. Can 
some of you gurus out there give me a heads up on the way to get the 
Multi-Setups correct so I can accomplish this. I am having trouble 
with I guess the way I am turning Midi channels on and off and 
whether they are local or not. Heres my setup:

EMU/Ensoniq HALO 
* PHATT ROM installed
* VINTAGE ROM installed
* COMPOSER ROM installed

EMU XL7
* BEAT GARDEN ROM installed

I understand how I select different sounds for different channels as 
i use that consistently to quickly switch between patches during 
performances. I just can't seem to get it straight on how to set the 
XL-7 to record what I play on the HALO and also the tracks where I 
would like the keys I play on the HALO to trigger the XL7 based 
sounds as well. 

Any help would be appreciated greatly.