I was having trouble setting up wireless storage on my LG Volt, so I searched and found this thread . . . and the simple statement about "entering the IP address into the [Windows] Explorer" went <SNAP!>: The Help on the Android for doing this said to enter the same into my BROWSER'S address field!! The latter does not work, giving the "cannot connect" message, but entering it instead into (My Computer) Explorer address makes it all work fine!
Instead of using the IP address, use the device name--e.g., on my Windows XP it's
\\LG_Volt\LG_Volt
I think that will always be the same, no matter what IP address the router assigns when you log on.