I have had my comp a long time and my internet has always worked until now. I woke up and it didn't work...I reinstalled my linksys wrt54g router and now it can't find an I.p. Addess...I have pinged an ip adress and it worked fine but my comp won't connect to the Internet.. I also tried plugging my comp directly to my broadband router and it still didn't work....I need my Internet to work so amy suggestions would be appriciated

Ok, can you open up command prompt and type nslookup and see if it can reach your domain?

Were you given an I.P address to enter into your router by your service provider? If so, you may need to re-enter that along with your gateway and DNS address.

How do I check my DNS server number in the command prompt?

when I typed nslookup it said the DNS request timed out

Sometimes routers or modems for some reason act up, it's pretty much normal. If you connect to the internet through a modem provided by your ISP, which then goes to your router, try the following.

Note: Please make sure the modem and router are connected properly to each other before trying the following.

Disconnect the power to your modem and router and wait at least 10 minutes. Now plug back in the power cable to your modem and wait 1 minute. Now plug back in the power to your router and wait another minute.

Analyze the status lights of your modem and router and make sure all the essentials are ON and in the proper color, usually green is GOOD, orange or red is not good.

If this does not work, then leave the router on, power the modem off and wait about 10 minutes. Now power the modem back on and try again. You may also try resetting both the modem and the router (they should have a reset button in the back). Make sure you have not assigned a static IP to your network adapter. If you have another computer available, try connecting it to your router and see if it works.

Nick,
Set your DNS server to the internal IP address of the router.
If you can't do this, then there is another issue.
Are you actually running DHCP from the router, or just tagging along?
Your router should pick up a DNS setting, then propigate it to you.
If it doesn't log in to the internal IP addres of the router, then set your secondary and tetriary DNS to the ones listed for the router, with the router as your primary DNS.