From what I can see your going about that all the wrong way..let me see if I understand your setup, on your PC you have a wireless PCI card granting you wireless access via a router with a manually configured IP, then you have a wired lan card also installed which is not wired to the router. You are then wiring the xbox to the wired lan card? Here's my next question, do the specs on your router claim it's xbox compatible? I guarantee you you're not going to get the xbox to work online if my assessment of your setup is acurate. To get the xbox online, (mine is online via router, as is my PS2) you'll need to enable your dhcp server for one thing, I'm yet to see a manually configured xbox work online although I suppose it may be possible, and allow the dhcp server to assign addresses to all of the devices. I'm curious why you'd disable this feature, it's sole purpose is to save you all of that trouble. As Bob said, not only is bridging not the proper way to do things, but it won't work. I see what you're trying to accomplish, but if you bridge the cards successfully, how do you propose to assign a different ip to each of the TWO devices you have connected to the bridge. Where's the interface allowing you to do that? It appears you have all of the necessary hardware to accomplish your goal, unless there's info I'm missing like there are no free switch ports on your router or something. Did you turn off the dhcp server in the router as a security precaution? If so I don't beieve it to be necessary on a properly secured network. In addition, your router may need a firmware update to make it compatible with the xbox, many of the major manufacturers have issued updates for their routers for this exact issue. Your xbox needs dns addresses to funtion on the internet, but that's an issue that would resolve itself with the dhcp server being enabled, some routers will not assign a dns suffix to an xbox, making them ''incompatible with xbox'' but it can be done manually'' You have to think of your xbox like it another computer on the network because that's exactly what it is. Additionally, you need to make sure that if the mac address filtering is enabled on your router (and it definitely should be) that the mac address of your xbox nic card is entered as allowed to connect to the network. Good luck, let us know if you make any progress.