Server Networking question

Hi all,
I have a quick question. I have a cable modem connected to a wireless router (WRT54GS) upstairs on the third floor of my home. I have a server setup (Windows 2008 Standard) downstairs, which is connected via wireless to the WRT54GS. However, through this server, I have a second switch (using ICS at the moment) to connect to various other peripherals (NAS, etc). My question is, how can the server see the NAS and other devices connected to the switch. Also, how might the WRT54GS be able to see those devices as well. The following might help:


(INTERNET)----> Cable Modem -----> WRT54GS (192.168.1.1, 192.168.1.101-199)
--------------------------------(Floor 3)------------------------------------------------------------
--------------------------------(Floor 2)------------------------------------------------------------
Wireless Card (192.168.1.101)---> Server---> ICS (static 192.168.0.1)---> switch (192.168.3.1,192.168.3.1-99) ---> Nas, etc...

So, again, I need the NAS, etc... section to be seen with the server and any other device connected to the WRT54GS. Sorry for the long post...

THANKS SO MUCH!