can i find & click a link in webpage programatically, if it has a dialog box open

[deepak...@gmail.com]

Hi,
Basically i want to access the webpage of my router, which is always
http://192.168.1.1, and i want to put a password in the encryption
key, and save the settings.
That's it.
But every router will display a username-password dialog box first. i
don't know how to put those values programatically. i don't want to
display the browser control to the user.
Second problem is, when i browse the HTML page through microsoft's
parser as DOM, then i can iterate all nodes and collections &
everything, but i didn't find a way to reach at the place i want -

On the "Wireless" tab there is another tab "Wireless security",
and on that there is a combo box "Security mode", from which i need to
select one item. and on selection of that item, one more password box
will start showing, on which i have to put password, and click on
"Save Settings" button.

Could you guide me to right direction or preferably give me some
code/link.

Thanks a lot,

Deepak