static extern bool iPAQSetBlueToothRadio(ref int status);

Private Shared Function iPAQSetBlueToothRadio(ByRef dwValue As Integer) As Boolean

IPAQUTIL_API BOOL iPAQSetBlueToothRadio(DWORD *lpdwValue);

    static extern bool iPAQSetBlueToothRadio(ref int status);

      if (iPAQSetBlueToothRadio(ref ret) == false)