Product key hash

I'm guessing you mean this:

Code:

Set WshShell = CreateObject("WScript.Shell")
MsgBox ConvertToKey(WshShell.RegRead("HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\DigitalProductId"))

Function ConvertToKey(Key)
    Const KeyOffset = 52
    I = 28
    Chars = "BCDFGHJKMPQRTVWXY2346789"
    Do
        Cur = 0
        X = 14
        Do
            Cur = Cur * 256
            Cur = Key(X + KeyOffset) + Cur
            Key(X + KeyOffset) = (Cur \ 24) And 255
            Cur = Cur Mod 24
            X = X -1
        Loop While X >= 0
        I = I -1
        KeyOutput = Mid(Chars, Cur + 1, 1) & KeyOutput
        If (((29 - I) Mod 6) = 0) And (I <> -1) Then
            I = I -1
            KeyOutput = "-" & KeyOutput
        End If
    Loop While I >= 0
    ConvertToKey = KeyOutput
End Function