Private Declare Function SetCursorPos Lib "user32.dll" (ByVal x As Long, ByVal y As Long) As Long
Private Declare Sub mouse_event Lib "user32.dll" (ByVal dwFlags As Long, ByVal dx As Long, ByVal dy As Long, ByVal cButtons As Long, ByVal dwExtraInfo As Long)
Private Const MOUSEEVENTF_LEFTDOWN As Long = &H2
Private Const MOUSEEVENTF_LEFTUP As Long = &H4

Private Sub Command1_Click()
    SetCursorPos 25, 750
    mouse_event MOUSEEVENTF_LEFTDOWN Or MOUSEEVENTF_LEFTUP, 0, 0, 0, 0
End Sub