Changing your WRT54GS Linksys wireless password is a crucial step in ensuring the security of your network. Follow these simple steps to update your password:

1. Access the web-based setup page by entering '192.168.1.1' in your browser's address bar.
2. Enter the default username and password ('admin' for both, unless you have changed it).
3. Go to the 'Wireless' tab and select 'Wireless Security'.
4. Enter your new password in the 'Passphrase' or 'Password' field.
5. Save your changes and log out of the setup page.

Remember to choose a strong password that combines letters, numbers, and special characters to enhance security. Regularly updating your password is recommended to protect your network from cyber threats.