Well, I decided to hook this pos desktop up in my room, as a stable computer and when I hooked up the router in here to bridge the connection, nothing will connect to the internet through it. So far, I've done the reset button, went to the setup page in the browser and restored factory defaults, and hit about every button on the thing.

What I need for it to do is to bridge a wired connection from another router to a desktop and an xbox. If any of you can help, please do so.

Are you using a router as a repeater?

What do you mean by repeater?

It's a Cisco Linksys WRT54GS

In theory it's fairly simple to do actually. Make sure all the DHCP crap is turned off on the 2nd router and that it's IP address isn't the same as the other but is in the same range.

To make a wireless bridge between the two of them you then have to set the SSID, channel etc in the wireless settings to the same as the other router. Then setup WDS on both the routers so they'll bounce the link between each other. (download the router's manuals for how to set that up)

Of course it has it's downside, half the wireless bandwith will be eaten by the link.

Well the router hasn't been "working" for about a year now. Even when it was connected straight to the modem, it wouldn't let anything connect to the internet.

It's a router, not a modem. You didn't help at all :/