Concerning the Windows WLAN Management, the last two Dell laptops I've had didn't use that. The Dell's use the Intel WiFi Connection Utility to handle the WiFi.

As for the router mangement utility, you usually just put it on your primary system. You can then use it to rename your network name to WHATEVER, update the password, and remove certain IP's if desire. So they do serve a purpose...just don't put it on every device.