To complement the C# version posted Here,  here is a working VB translation:-

<System.Runtime.InteropServices.DllImport(“coredll.dll”)> _
Private Shared Function GetDeviceUniqueID(ByVal appdata As Byte(), ByVal cbApplictionData As Integer, ByVal dwDeviceIDVersion As Integer, ByVal deviceIDOuput As Byte(), ByRef pcbDeviceIDOutput As Integer) As Integer
End Function

Private Function GetDeviceId(ByVal appData As String) As Byte()

Dim appDataBytes As Byte() = System.Text.Encoding.ASCII.GetBytes(appData)
Dim outputSize As Integer = 20
Dim output(19) As Byte

Dim result As Integer = GetDeviceUniqueID(appDataBytes, appDataBytes.Length, 1, output, outputSize)

Return output

End Function