OK. First, disconnect the cables and turn off your router. Then connect the cable you used with your modem to the WAN prt. The WAN port should be the one that is kind of set apart from the others. It might not be connected with the same strip of metal to the router's body or it might say WAN or it might be farther away from the other ports. Power on your modem. Wait so all the lights are steady. Connect the cable that kind of looks like a phone cable (except wider) to one of the other ports (doesn't matter which one) on your router and run that cable to the right port (which the router was previously connected)on your PC. Power on your router. If the internet doesn't work, follow these steps on the computer running Windows XP:
1) Directly connect your PC to your modem but keep everything powered on.
2) Go to control panel and hit 'Network Connections'
3) Right-click 'Local Area Connection' and hit repair
4) Wait until the computer tells you it is done
5) Go to the start menu and push run
6) Type 'cmd' and hit enter
7)type 'ipconfig' and press enter
8)look for a place where it says 'IP Address'
9) In Internet Explorer, tpye in 'http://', followed by the number you just got, and then put a slash (/)
10) For example: if I found the IP Adress to be '192.168.1.254', a very common one for modems, I would type 'http://192.168.1.254/' in the address bar and hit enter or press go
11) A page for your modem should come up
12) Depending on your modem brand and model, you must bridge your connection. Often these settings will be under Configure or Connections. You may have to push a button that enters expert mode. If you want, you can call your DSL service provider and ask them how to bridge it. Tell them you are on the modem's home page and that you would only like to know how to bridge your modem.
13) Now connect your modem to your router's WAN port (the one that is slightly set apart from the others, but has the same connector) and another cable to your computer from one of the router's other ports.
14) Now repair your connection again (steps 2-4)
15) Go to Internet Explorer and type in 'http://192.168.0.1/' and hit go or press enter
16) You should come up with a page for your router, sort of like the one you came up with for your modem
17) There might be a 'Run Wizard' button on that page. Press it and follow the on-screen instructions. If not, go to step 18.
18) There might be a button that says WAN on the left-hand side of the page. Press it.
19) there should be an option for connection method or something similar. In that option, look at all of them until you see PPPoE. Push that.
20) Enter your username and password for your service. Your brother should have this info. Many companies use the format last name, first email@example.com and the password is the last 7 digits of your phone number. For example, if my name was John Smith, my internet service provider was 'PhoneCorp.' and I had the phone number (123)456-7890, my username and password would look like this:
firstname.lastname@example.org -> username
4567890 -> password
21) Press apply or submit or whatever button might do that. You should be up and running.
22) Hook up your ME computer to another of the ports on the back of your router with the a cable, 'Ethernet', which you have between your router and modem or router and computer.
If you have any problem, tell me avout it in this thread; I have bookmarked it and will be checking it often.