I do have hostmibd, aixmibd, snmpmibd and snmpdv3ne running now.
And I am able to get the CPU info I wanted...
clsnmp -v -h snmpmon walk 1.3.6.1.4.1.2.6.191.1.2
aixSeCPUUtilization.0 = 0
Basically, I am trying to find the AIX mibs equivalent to those for Linux (
http://www.debianhelp.co.uk/linuxoids.htm) for Load, CPU and Memory (Used, Free, Cached, etc).