At&t installed a new modem, now my linksys wrt54g doesn't work. Do I need to reset it? My network password has changed. What steps do I take?

I haven't a clue? Reset the device to default settings and reconfigure. Use this procedure, if you need it, to reconfigure, update the firmware if applicable: http://support.linksys.com/en-us/support/routers/WRT54G AND this: http://www.columbia.edu/acis/networks/aptnet/linksys/

Change the wireless network name and then change the key.
Try to connect to the new wireless network and see if that works.
If not then you can try to upgrade the firmware of your Linksys router.
After upgrading the firmware, reset the router and reconfigure it.

To reset your router, use the following steps:

1. Press the reset button for 30 seconds.

The settings should now be returned to the factory default settings, meaning any changes you had made would be deleted.


2. Open up your Web browser and enter "192.168.1.1′ in the address bar.
3. For the login, leave a blank ID and enter "admin" as the password.

The router has now been reset. Follow the steps in Securing Linksys WRT54G Wireless-G Router to secure your router and create a good wireless network security.

Your mistake was to run the CD on the laptop. When a router is working and computers are using it NO CDS ARE EVER NEEDED. Your laptop will connect to it just using what is already in the computer.
When you go to starbucks and use the internet they don't give you a CD to install do they - they just give you a password - that is all you need. The fact that you are hard-wired means you don't even need a password.

You need to reinstall the router to your modem. Start with unplugging both the modem and the router. Plug in the modem and wait for der blinkin' lights to stop (linked to host) then plug in the Linksys. Now, depending on whether you have a DSL or Cable Modem, you need to follow the installation instructions. In DSL, you will need to set PPPoE, a username and password, etc. You can go to the Linksys site and get the FAQ for your modem here http://www.linksysbycisco.com/US/en/support/WRT54G

If the setup does not work, and most notably in Cable Company modems, they may have to send a reset to make the Linksys work.

Carl

The default Linksys WRT54G login is:
Username: <blank>
Password: admin
If u still didn't successful to log in then u have to reset the modem to it's factory default setting.
Just press and hold the Reset Button at the rear side of modem for approximately five seconds when the modem is on.

I have att yahoo dsl which I installed about a year ago. The process required bridging the ADSL Modem (in my case a speedstream 4100) and accepting dynamic IP addresses and configuring PPPoE on the WAN side of my Linksys router. The ATT support person walked me through the entire process over the phone even though I was comfortable with making the Linksys configuration changes as I had to do the same in China without technical support. The modem configuration was no more difficult than the router configuration as it was performed from a web browser too. The biggest warning was that to reverse the modem change (if desired) required use of a reset button because the web interface was disabled as a result of the configuration change. My advice to you especially if you are willing to attach the Linksys router to the telco modem is to contact the ATT highspeed DSL support line and see if they will walk you through it like they walked me through it. Reviewing your Linksys User's Guide and understanding the configuration of that device would probably be appreciated by the ATT Support person as well as assuring you can access the Linksys router to configure it during the call.