All you should need is the driver for the wireless adapter , you can download the driver from this website
http://www.dynexsupport.com/product/?pid=DX-BUSB run the program to install the driver
To check the adapter is installed go into the device manager and see if its shown. Press the
Windows key (bottom left of the keyboard} and at the same time press the
R key, now in the search box that appears - type
devmgmt.msc and see if you have a wireless adapter showing at all. are there any ? X or ! look under network adapters - click on the + and see if you have the adapter listed - check if it has any X or ! or ?
A useful tool to use, if you can copy onto the PC, http://www.xirrus.com/library/wifitools.php this will detect all the networks broadcasting - so you can now see if the adapter is working and if it will detect your wireless network