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?

modem -> router -> another router (the repeater) -> computer.

A repeater is needed when you have > 300 ft of ethernet.

it sounds like you're trying to utilize the router as a switch. It'd help if you could tell us what kind of router you're using for this.

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.

Lesson time.
Router, has the highest hierachy level in a connection, they normally connect to switches and/or modems and/or other routers. Needs configuration.
Switch, usually connects to computers and/or routers and/or modems and/or other switches. Advanced features need configuration. (LAN is built of switches and/or modems.)
Modem, a basically an advanced switch, has some router functions. Usually connects to computers and/or routers and/or switches and/or other modems. Advanced features need configuration. (LAN is built of switches and/or modems.)

Salesmen speak of all of these devices as routers which causes confusion. Normally for private use you should use modems, but switches can also be used. Routers need special configuration and a private internet address (or a public one that you can use).

I couldn't verify whether your device is a modem or a router, Cisco claims it's a router but it seems like a modem to me.
But anyway here is a lot of forum discussion and faqs, check them out if you haven't.

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

Well, that was more of a general lesson anyway. A router must be set up, Cisco has their own text based operating system for that. I'm sure they have a guide somewhere through the link I gave, I'll try and see if I can find one.
E:
Internet based setup.
That looks like it, not sure, I've never had an actual router or anything made by Cisco. And my IP-networks course is still running. But anyway, you could also try contacting Cisco's customer support, helping customers is (or atleast should be) what they are for.