Cable modem to router (wan port)
router port #1 to other router
The playstation and xbox to the router
and all the switches to the router
other computer to the switches and/OR to the router.
Remember, that second router, should have DHCP disabled.
Wireless Accesspoint, could be connected to the router (first or second, closer to the wireless device location)
ok, just want to check and see if this is the correct setup for my home net. any feeback would be great..
cable modem to ethernet switch
ethernet switch port #2 to playstaion #1
ethernet switch port #3 to router
router to xbox360, mac#1 and pc
off this router I have another line to an ethernet switch which connects mac#2 and playstation #2 upstairs.
I have two IP address so that both playstation can go online in the same game.
yeah, I'm thinking about going wireless which will be another can of worms.
thanks!

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic