1. Did you turn off the internal wireless card, som elappies have a switch or you may need to disable it in device manager
2. Using the adapter to find the network by using its own software is better than using windows wireless service. Turn this of by clicking, start, run, type in services.msc and then scroll down to the WZC, righ click it and select stop.
Now use tha adapters software to connect to the network, you will need to enter the security key when prompted.