PIX 515E DMZ with Public IP and Inside with Private IP

Hi, I have T1 with a class C that is subnetted into two for Outside and DMZ network with Inside using private IP address. My question is how do I configure the DMZ to use the public address without NATing to the Outside IP address. All the config sample I found uses Outside public IP address NATed to the DMZ private network? i.e., DMZ with web server using IP address from Outside network.

I am looking for sample configuration that uses public IP on the Outside, public IP on DMZ and Private IP on the Inside.

TIA, BK