Here's a neat bit of code that lets you simulate keyboard events, including Shift and Ctrl actions.

Public Declare Sub keybd_event Lib "user32" (ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)
Public Const KEYEVENTF_EXTENDEDKEY = &H1
Public Const KEYEVENTF_KEYUP = &H2

Public Sub KeyDown(KCC As KeyCodeConstants)
    keybd_event KCC, 0, 0, 0
End Sub

Public Sub KeyUp(KCC As KeyCodeConstants)
    keybd_event KCC, 0, KEYEVENTF_KEYUP, 0
End Sub

Public Sub KeyPress(KCC As KeyCodeConstants)
    KeyDown KCC
    KeyUp KCC
End Sub

Public Sub ShiftOnn()
    KeyDown vbKeyShift
End Sub

Public Sub ShiftOff()
    KeyUp vbKeyShift
End Sub

Public Sub CtrlOnn()
    KeyDown vbKeyControl
End Sub

Public Sub CtrlOff()
    KeyUp vbKeyControl
End Sub