Apple Logic Pro /LogicExpress Discussion

I'm running L7 on a G4 dual 500 with 640mb RAM.

I was maxing out my CPU last night and opened up that system
performance window within Logic. In it, there are two levels for CPU
load and 2 levels for HD I/O. When my CPU was maxing out, I noticed
that only the left level for the CPU area was "clipping"...the other
one was at a very low level. Do those 2 levels for the CPU represent
each of my G4 processors? If so, is there a way I can balance the
load between the two?

I assumed that L7 would recognize dual processors and make use of
them automatically...is there something I need to set up to make this
happen? The only thing I had running in my session was a single
Sculpture synth running a preset. I know my mac isn't top of the
line, but it seems like it should be able to handle at least that!

Thanks for your help.

gys