yea there is only one ethernet and one phone line jack on the back of the online extension. The two usb ports in the front can only be used reaally as a power source and a way to comunicate with the ps2 eg headset. You cannot hook a wireless usb adapter into one of those ports. Most likely the bridge will be compartible with your network. but i think belkin would have an external ethernet just for these type of situations. Otherwise i would go for the linksys. I am planning on doind the same thing you are and am planning on getting the linksys.
edit: i looked at belkins website and they said that they are coming out with a wireless ethernet adapter soon for wireless g
http://catalog.belkin.com/IWCatSecti...tion_Id=201522