Asignar la hora actual al sistema

Private Declare Function SetSystemTime Lib "kernel32" (lpSystemTime As SYSTEMTIME) As Long
Private Type SYSTEMTIME
    wYear As Integer
    wMonth As Integer
    wDayOfWeek As Integer
    wDay As Integer
    wHour As Integer
    wMinute As Integer
    wSecond As Integer
    wMilliseconds As Integer
End Type

Dim HoraSistema As SYSTEMTIME
Dim FechaActual As Date
Dim lReturn As Long

' Una fecha al azar
FechaActual = CDate(#12/1/2003 4:45:23 AM#)

' Ahora preparamos los datos para actualizar el reloj del sistema
With HoraSistema
    .wYear = DatePart("yyyy", FechaActual)
    .wMonth = DatePart("m", FechaActual)
    .wDay = DatePart("d", FechaActual)
    .wHour = DatePart("h", FechaActual)
    .wMinute = DatePart("n", FechaActual)
    .wSecond = DatePart("s", FechaActual)
    .wMilliseconds = 0
End With
' Asignamos la hora al sistema
lReturn = SetSystemTime(HoraSistema)