1> connect your laptop with the WRT54G at port no. it is very important to hardwire your computer, that is connect it to your laptop with Ethernet cable and not through wireless, also check for the light status of the router to ensure that it is connected.
2> access the router setup from a web browser (may be using 192.168.1.1, the default address of your router, and admin as username and admin as the password too.). You can also go to kb.linksys.com if you need more help to access your linksys router setup. If you have other router let me know and I will update this.
3> at the top click on wireless on the BLACK bar at the top.
4> under wireless click on wireless security on the blue bar.
5> select the security mode as WPA-PERSONAL (best encryption and supported by all devices).
6> select WPA ALGORITHUM as TKIP.
7> in WPA Shared Key type your password or any thing else but it should be at least 8 characters long. and you should remember it as this will be your wireless password.
8> the Group Renewal key should be 3600.
9> Click on save settings at the bottom.
PERSONALIZING YOUR WIRELESS NETWORK NAME
1> Under Wireless, click on Basic wireless settings.
2> MODE: mixed
3> NAME: CHANGE IT to your desired name, mine is nirvana> Channel: 11
5> SSID BROADCAST: ENABLED
NOW YOUR ROUTER IS CONFIGURED.