So this continues...I found that I can configure a DHCP public PIX with a PIX that has a static address so I setup the following 'minilab' at my desk to test'er out. I think I'm almost there but am having one snag that someone more attuned to this might be able to catch.
Both PIXs are connected to a network: 192.168.168.0/24. There is a DHCP server on this network. One PIX pulls a DHCP address and the other is statically set. Therefore:
Static-PIX: 192.168.168.200 DHCP-PIX: 192.168.168.30
The private sides of the devices are: Static-PIX: 172.16.1.0/24 DHCP-PIX: 172.16.2.0/24
When I try to start a ping from the DHCP-Pix LAN to the Static-PIX LAN (Which is the way this is going to need to work out in the real world), I get the following from 'debug crypto isakmp'