Jeanne techielists at regionalhelpwanted dot com wrote
> 
> Has anyone successfully set up a DMZ using public IPs and if 
> so could you kindly tell me how to do it?
> 

I've divided my /28 in two /29 Subnet. One for WAN and one 
for DMZ. 

WAN Net:    x.x.x.240/29
Hosts:      241 ... 246
Broadcast:  x.x.x.247

DMZ Net:    x.x.x.248/29
Hosts:      249 ... 254
Broadcast:  x.x.x.255 



x.x.x.241       x.x.x.242/29     192.168.x.x
ISP 	------------------ m0n0wall -------------- LAN
                            |
                            |x.x.x.249/29
                            |



Try http://www.pkostov.de/ipcalc.html

HTH

Jürg