Yamaha DTXpress/DTXplorer/DTXtreme

Hi,

It's been a mighty long time since my last post but I am monitoring 
the Group regularly.  I'll soon have to get with it and upgrade to 
an Extreme kit.

For now, my attention is the Roland Octopad and units like it.  What 
can I learn about its compatibility with DTXpress II and about the 
best way to link it.  Right now I am running the snare, 4 toms, Hi-
Hat, bass and three cymbals.

Thanks for whatever you have to offer.

Sean