Forgot to add.
Browse to C:\Documents and Settings\All Users\Application Data\Windows Genuine Advantage\data and there's a file called data.dat
You WILL need to enable hidden files/folders to see the file.
Delete the file.
Right click, Create new text document. Rename, to data.dat (Say Yes to change file extension name - obviously) You will need to view file extensions to do this.
Now you'll have an empty data.dat file.
Right click, properties, and put two checkmarks in the Hidden and Read-Only boxes.
That's all.