Networking :: Netbook Acting As A Server And As A Switch?

I want to use 2 network cards on a notebook (one internal and one by USB). I don't want the typical "internet sharing", so I want it to act really as a switch:

Other room <== 1Gb/s ==> Notebook <== 100Mb/s ==> network switch with more computers.

I want to do it because i want to use the 1Gb/s link from the other room to the "servers" room, and then the rest of servers will run at 100Mb/s. I wanna all my computers in the same network, like there's no notebook in the middle, so the Notebook will act as a switch (and a server). i wanna (assumming all of this is possible): Code: > [network switch] 1Gb/s

> 192.168.2.1 [router] 100Mb/s
> 192.168.2.2 [wi-fi AP] 100Mb/s
> other room 192.168.2.50 [new notebook] 1Gb/s

[code]....