here is what i'd like to do. i don't know how hard it is/what will make it easy. I can start with a fresh install (I've got Mandrake 8.2 handy).
ideally:
a single computer as firewall, NAT (internet sharing to the local LAN), a basic web server (php/mysql) AND enabling a DMZ (second network zone). so, 2 or 3 ethernet cards, one to a DSL modem, one to the local LAN (a hub), and i guess an independent one to a win2k development box (we do asp work here as well). so i would want, for example, http requests for lin.myoffice.com to be hosted by this linux box (that is also being the firewall), but http requests for win.myoffice.com would be passed to the win2k server. The local LAN clients would ideally be able to access both the windows box and linux gateway/firewall/server.
I've looked at smoothwall/ipcop, but I want this machine to be a basic server as well.
so, how do i get from a blank machine to where i want to be? I'm not a wiz on the command line, so i'm tempted to an app like firestarter (can it do what i'm asking?), but if i've got to stumble through some terminal stuff, so be it.

thanks in advance

If you just want the job done, or want to see how it looks in real life, take a look at www.astaro.com and the free-for-home-use offering.

You can pick it to bits and see which services are where and why...