How do you activate a password on my wireless router? D-Link DI-524

How to Access the D-Link Configuration Screen:

1. Launch your Web browser. Enter (default) "http://192.168.0.1" into the address bar and press the "Enter" or "Return" key.
2. A logon pop-up screen will appear. Type "admin" for the username and leave the password field blank.
3. Click "OK". A D-Link configuration screen will appear. All changes to the D-Link configuration are made here.

Change the Admin password:

Go to the D-Link configuration screen and:
1. Click the "Tools" tab.
2. Click the "Admin" button.
3. Under the "Administrator" heading, enter the new password, and a second time to confirm.
4. Click "Apply".
5. The next time you access the D-Link configuration screen, you will need to enter the new Admin password.

Don

This doesn't work for me!
I don't know what to type in.

How to Access the D-Link Configuration Screen:

1. Launch your Web browser. Enter (default) "http://192.168.0.1" into the address bar and press the "Enter" or "Return" key.
2. A logon pop-up screen will appear. Type "admin" for the username and leave the password field blank.
3. Click "OK". A D-Link configuration screen will appear. All changes to the D-Link configuration are made here.

Change the Admin password:

Go to the D-Link configuration screen and:
1. Click the "Tools" tab.
2. Click the "Admin" button.
3. Under the "Administrator" heading, enter the new password, and a second time to confirm.
4. Click "Apply".
5. The next time you access the D-Link configuration screen, you will need to enter the new Admin password.

Don

Ok so I tried doing that but to my surprise it just sort of disaapeared then came back I don't recall changing it any time I may have, but I do not remember it. Is there any way to recover it? If so, please tell me. Is there anything else I can do??

I have a d link di 524 wireless router is configured for open access. Can you advice how to set up a password on the network step by step.