If you are able to open the CD to view the files, open the folder that says XM-WN3200;XM-WN3201;XM-WN3201D or USB(PWI_USB_WN300&XM_WN3200) . Then click on the W2K-WXP-W7-W8-Free file and install.
If you are having difficulties installing the drivers from the CD or the CD won’t load, please click on the following link.
Click on XM-WN3200, which is the last file. It will install a zip file that you will then need to unzip (if asked, click extract all) and then click on the file that says W2K-WXP-W7-W8-Free and follow the prompts to install.