First we will need to use the computer that we have wired directly into the LAN port on the router. Once you are on this computer please open your Internet browser (We will be using Internet Explorer for this example).
Once you have opened your Internet browser you will need to clear out the Address Bar across the top. Here you will need to type in http://192.168.0.1 into the Address Bar and then press Enter on your keyboard.
You will then be prompted for a Username and Password. Enter admin for the Username and leave the Password (blank). Then press Enter on your keyboard or OK on the screen.
Now you will click on Wireless Settings on the left side of the screen. When the new screen loads on the right you can rename your wireless network by changing the Network Wireless Name. Under Wireless Security Mode select Enable WPA - Personal Wireless Security from the drop down box. Now boxes will appear below that labeled Passphrase and Confirmed Passphrase. This is where you will type what you would like your wireless password to be. Once you have entered your password press Save Settings towards the top of the screen.
After you have pressed Save Settings the router will now broadcast a secure wireless broadcast. Any of your wireless devices will initially have to type in the passphrase which was entered into the wireless router.
STEP 1: Open your Web browser. Type "192.168.0.1" (without quotes) into the URL field to navigate to the D-Link router setup page. The administrator login prompt will appear.
STEP 2: Type "admin" (without quotes) into the "User Name" to log in with the default login. Leave the "Password" field blank. If you have customized your D-Link login information enter your personal user name and password into the appropriate fields.
STEP 3: Click the "Wireless Settings" tab.
STEP 4: Click the drop-down arrow of the field next to "Security Mode".
STEP 5: Select the security mode you want to apply to the router. Microsoft recommends using WPA2 if possible.
STEP 6: Type a passphrase into the "Passphrase" field. Confirm the passphrase in the "Confirm Passphrase" field.
STEP 7: Click the "Save" button to apply the changes.