Trouble using WPS to connect to internet

Hello all. To start, I'm running Windows 7 Home Premium, Service Pack 1. I'm on an Asus G51Jx laptop, if that's any help.

I'm currently at my grandparents house, and naturally they have no idea what their wireless password is. In order to avoid changing it (and possible having some awkward confrontations with my uncle) I'm trying to connect to their internet using WPS (on a 2wire router, if that's any help).

Now, I was able to use my blackberry to connect with WPS, but I haven't had the same success with my laptop. According to the Windows help site, I should be getting a window that looks like this, but all I'm getting is this window.

Has anyone had an issue similar to this? I can't figure it out for the life of me, any help would be much appreciated.

Well if the network is not known by your laptop you still have to enter the key.
Maybe you are able to access the config menu on the router without entering a password.
So you would able to look it up if it is not encrypted.

This website is not affiliated, owned, or endorsed by Microsoft Corporation. It is a member of the Microsoft Partner Program.