Check Your Windows Vista Activation Status

This is an interesting and useful utility that will tell you the status of the computer you are working on that is using Windows Vista. If you are connected to the Internet, the utility will be able to tell you if the Windows Vista version you are using is fully licensed or not.
Click Start
Type cmd in the search box and hit ENTER
Type slmgr.vbs -dli in the command line
Wait a few seconds for a Windows Script Host pop-up window to display the License Activation Status
Click OK
The pop-up will also tell you the edition you are using, a description, as well as the license status.