Linksys DMZ and Windows ICS

Hello,

I have a linksys wrt54g router and I want to use the dmz for my video
game systems and possibly a server in the future. I am limited to one
dmz address in the router. Is there a way to get more machines onto
this dmz?

I was thinking of throwing in a small pc on the dmz. One nic would go
to the router and another nic going to a hub. Then use Windows ICS on
that machine so I could hook up additional machines or game consoles
onto this dmz.
(Small diagram at bottom)

Just wondering if the above would work or not, or would using ICS
defeat the purpose of the dmz?

If anyone has any other ideas on how to accomplish what I want to do,
feel free to throw it in.

TIA
Greg

DSL---Router---LAN
|
|DMZ
PC with ICS
|
hub
|
machines