Hi, I just purchased a Signal King SK-11TN USB WiFi antenna. It seems to do a good job of finding networks that otherwise wouldn't have popped up on my wifi adapter's radar screen. Many of these networks appear to have a strong signal, many with 3 and 4 bars. But, whenever I attempt to connect to them, I usually get an error message stating that a connection couldn't be established. I don't mean that there was some kind of security I couldn't circumvent; I'm never asked for a password. It doesn't even get that far; it seems that I can't communicate with these networks at all. Why is this happening, and how can I fix it?