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

I just got my new XL-7 and I am totally happy with it! 

Question:  I want to have XL-7 play the drum sounds and have the 
builtin sequencer control my external keyboards.  How do I do that?  
I have studying the manual and I am not finding it.  I also want to 
make sure that the midi data to only play on the keyboards, not the 
built-in sounds in the XL-7.

Please help.

Thanks
tcdave