How to put a security password on a linksys wireless router?

i have a WRT54G linksys router and i disabled the password so i can be easier on the family, but now i found out that hackers/neighbors/ and others are using this network. How can i put up a password?|||To change your wireless password:





Open a command prompt on a computer connected to your network, and type in ipconfig. Take the default gateway address and put it in your web browser. The login is usually admin admin, or admin *blank*. Then look through the control panel for an option to change the wireless password.





If you are given the option, use WPA2 with AES for your security settings.