If you're unaware of the validity of your copy of Windows, or possibly other software, call 1-800-R-U-LEGIT or visit http://www.microsoft.com/resources/howtotell/ww/windows/default.mspx
As for support, have you called the Microsoft support line for North America? More than likely you will either recieve an American or Indian representative to help you with any issues you might have with Microsoft software.