Help with TL-WN721N wireless adaptor

Hi,

I recently bought a TP-Link TLWN721 wireless adaptor
The device drivers & Utility installed without errors
When the utility starts it is on the advanced tab with all other tabs greyed out and are unselectable, even the options on the advanced tab cannot be selected..
I have already reinstalled the drivers & utility as well as downloaded latest version from the website & installed the same

I am using Windows 7 Home Premium x64 version
Please Advice

Thanks
Vipul