Click on the Operating System from the list below that is on the computer you are trying to connect to your wireless network.
If you are on another computer and need to know what Operating System is installed on the computer you are trying to set-up a wireless network, press and hold the Windows Logo key
then press the pause or break key (on notebooks it may necessary to press and hold the FN key before pressing the pause or break key). The System Properties window will open and the Operating System is listed.
Some newer notebooks no longer have a Pause or Break key.
For information on Wireless network connection issues in Windows, please refer to Microsoft Knowledge Base article:
Wireless network connection problems in Windows