The most popular consumer routers are Linksys WRT54G broadband router ,if you want to configure linksys WRT54G router then follow my blog-How to configure linksys WRT54G .
Step1: Unplug the power from the Linksys router.
Step2: Hold in the reset button and plug the power back in.
Step3: Continue holding the reset button for 30 seconds, and then release it.
Step4: Wait 30 seconds and then unplug the power from the Linksys router again.
Step5: Plug the power back in and wait another 30 seconds. At this point, the router can participate on a wired network without any additional setup. If wireless settings need to be configured, proceed with the remaining steps.
Step6: Open an Internet browser on a computer that is directly connected to the router with an Ethernet cable.
Step7: Type 192.168.1.1 into the address bar and press "Enter."
Step8: In login page, leave the username blank and enter "admin" without quotes for the password. Press "Enter."
Step9: Click on Wireless. Enter a wireless network name (SSID). Click "Apply" to save the changes.
Step10: Click "Wireless Security." Choose an encryption type, such as WPAv2, and enter a password to be used on the wireless network.
Step11: And finally clicks apply to complete the settings.
If you want reset the linksys router password then follow this article-How to Reset Password in Linksys Wireless Router.
To get technical support on linksys router ,you can reach online technical support service desk of V tech-squad at their Toll Free No +1-877-452-9201.