actually.. i also having the same problem you have.
well.. if you purchase the genuine widows vista, i recommend you to call the phone system nuber given (you only may view the phone number when you enter the right product key). then enter the phone system number one by one..if failll consult with the microsoft at your nearest location..
my copy of genuine vista deactivated after i add 1gb ram into... now running 100% smooth and my windows activated.