My network driver not working please help?

Hi experts
I am using Windows 8 operating system and Cnet CWP-854 does not work in my operating system!! Then I tried to install it in Win7 x64 drivers but still it is not working. Ralink RT2561ST Chipset.
I tried with TP-Link TL-WN851N. Both works fine with own windows drivers and TP-Links own Win7 x64 drivers. Need some information about this. Thanks a lot.
