I purchased the Windows 7 Ultimate upgrade, in order to install onto a new HD. I was previously using Windows XP, but found this article in order to perform a clean install on the new drive and then activate Win 7:
Within two of the workarounds presented in the article, it mentions running - from the command prompt - 'slmgr'. I have run this command a number of times (run as an administrator), but every time, I get the "Invalid combination of command parameters" dialog boxes.
I have tried every combination I can think of - running slmgr with and without the '.vbs' extension, using '-' before the parameter, using '/' before the parameter, etc.
Any and all help would be greatly appreciated!