Shortcut to view wireless networks in Windows 7
create a new text file and put this on it
rundll32.exe van.dll,RunVAN
save it as "wifi.bat" and create a shortcut of it wherever you want,
right-click the shortcut, select propriety and edit its shortcut key to CTRL + ALT + W
now Ctrl+ALT+W will popup that available Wireless network window.
Or use any other trick to map a keyboard shortcut to it ...
Have fun
Win + B is the built in key combination to get to the notification area. Then right arrow twice (or however many times you need) and Enter to show the available networks.
You could do this manually, or use Autohotkey to make your own single hotkey.