Airport Express: Snow Leopard 10.6.3 / Vista Home Premium / connect problem

Question

I have Snow Leopard 10.6.3 running on my Mac Pro, and I have an Airport Express for the little wireless network I am trying to set up....
...I can get my iPhone to connect - that was easy!
The problem:
My girlfriend is running Vista Home Premium on her HP laptop. She cannot connect to my network:
a) actually it comes up on her computer as being "connected to an unidentified network"
and
b) she continues to get "Internet Explorer cannot display the webpage" when she tries to connect to the internet.
Any ideas?
1) Is there a connection problem between Vista and Airport Express / Snow Leopard?
2) Anything special I need to do to let a Windows (or Vista specifically) computer connect?

Answer 1

Possible risks after someone cracked the password and connects to your Wifi:
- Someone could sniff passwords when the password is transmitted in plain text (e.g. check for mails with POP)
- Someone could access shares that are not password protected
- Illegal use of your internet connection
But I don't know how likely that is. Your decision.
However, we now identified the Windows Vista Wifi settings as the source of the problem.
You can now play around with the different encryption settings in the AX and identify when Vista starts to not connect.
I now remember that I had to add the Wifi settings to Vista manually for WPA2 Personal (WPK) as the system messed it up when I connected with a click and provided the password. So if you want to try WPA2 delete the profile in Vista, probably restart and then add all the Wifi settings manually instead of clicking on an identified network. Vista is definitely able to use WPA2, so there should be no need to toggle between WPA2 and WEP once you configured Vista correctly.