Welcome to LinuxQuestions.org. The reason it isnt working is because you automated you install with the ndiswrapper -m comand before setting any configuration instructions. You have not set the ssid with:
iwconfig wlan0 essid <your ssid name here>
or any other parameters that may be required by yoiur card to find the AP.
Your best course of action would be an uninstall, listed at the ndiswrapper site followed by a reinstall following the instructions to the leter. You could also just try configuring the interface and running the ndiswrapper -m command again. See if that works