Hi, Lester.
Here is a link to the driver downloads for your wireless adapter.
http://www.rosewill.com/products/d_1126/productDetail.htmClick on the tab for downloads, and then select the driver download for your operating system.
There is more than one version available for your device, I would go with the one that's listed as V1.5.1
That is the most recent version available.
I hope this helps you out.
Also, the manual is also available for download off of the same page.
Good luck with your download and installation, and have a good day.