John,

Maybe this will help with learning how the ACW works quick

http://www.masteringmatters.com/stuff/ACW_Tempo_Map_creation.avi

It is a little rough as I did it on the laptop while on the road (and not feeling well) but it covers the basic steps.
It is from a previous version of RB (back when ACW first came out) but is still pretty much applicable.

I imported an audio track in the example, but you can also use a seq file with same methods.
May be worth the 5 minutes.

I do not work here, but the benefits are still awesome
Make your sound your own!