Am gettin very angry because

If you want to lock your router so that nobody can use it, you need to lock it using a WEP or WAP key.
First of all you need to go to the router page.
To do this, click on start>run and type cmd.
It will take you to MS DOS window. Type ipconfig and hit enter.
Now look for default gateway. It will say 192. something.
Note the address.
Now open an Internet Explorer window and type the default gateway address.
This will open up the router page
It may ask you for username and password.
Normally the usernames are admin, administrator and the passwords are admin, administrator, password or it might be left blank.
Try this and if you are able to get to the router page, you can change the settings and use WEP or WAP keys and choose your password.