Go to this page, and read it, checking if it's the proper model's page.
Download the driver, unzip it to some folder and point the "new hardware wizard" to that folder when it detects your card. If it doesn't any more, go to Device Manager, open Properties of your already detected earlier card, find an "Update driver" button on a proper tab, and point to the folder where you unzipped the files.
Link: USRobotics support page