I hooked up a wireless D-link 524 kit for a friend. It says the indoor range is 328 ft. I have the other computer about 40 feet and it says the signal is from low to good but most of the time low. The antenna I am using for the other computer is a dwl usb antenna. I have it hooked up via a usb cable extension. The range is also stated at 328. I know that is only at ideal conditions but 40 ft should rate at least very good shouldn't it? What can I do?