Hi, in this moment im using just 2xNIC (LAN, WAN).  I want have a server 
(just ) where can all users copy their files. (mp3, movies etc.)

So, for this case i'll add one NIC... (it should looks like DMZ)

And here are my questions:
1,  Is it possible to do traffic shaping between local users (192.168.100.1) 
and local server (WIN XP - PC) ?
All local clients are conected wirelessly so this traffic regulations is 
very important because the file transfer will done over one AP.

Internet
|
m0n0 --- local server (WIN XP - PC)
|
AP ----(192.168.100.1) ---- etc.

2, Which IP address for the third NIC will be best choice? Same like others 
LAN?

All suggestion are welcome.
Peter