http://slil.ru/26070258
Сдесь находятся примеры кодов на VB6 ( Для акса тоже подойдут )

API-Guide
http://lib.mexmat.ru/books/24413

Увидел, что не все Const определены, для:
Private Declare Sub keybd_event Lib "user32"

Const KEYEVENTF_KEYUP = &H2 'событие отпускания клавиши
Const VK_ADD = &H6B 'клавиша +
Const VK_CONTROL = &H11 'клавиша Ctrl
Const VK_TAB = &H9 'клавиша Tab
Const VK_MENU = &H12 'клавиша Alt
Const VK_ESCAPE = &H1B 'клавиша Escape
Const VK_LWIN = &H5B 'левая клавиша, эмулирующая нажатие кнопки ПУСК
Const VK_ADD = &H6B
Const VK_ATTN = &HF6
Const VK_BACK = &H8
Const VK_CANCEL = &H3
Const VK_CAPITAL = &H14
Const VK_CLEAR = &HC
Const VK_CONTROL = &H11
Const VK_CRSEL = &HF7
Const VK_DECIMAL = &H6E
Const VK_DELETE = &H2E
Const VK_DIVIDE = &H6F
Const VK_DOWN = &H28
Const VK_END = &H23
Const VK_EREOF = &HF9
Const VK_ESCAPE = &H1B
Const VK_EXECUTE = &H2B
Const VK_EXSEL = &HF8
Const VK_F1 = &H70
Const VK_F10 = &H79
Const VK_F11 = &H7A
Const VK_F12 = &H7B
Const VK_F13 = &H7C
Const VK_F14 = &H7D
Const VK_F15 = &H7E
Const VK_F16 = &H7F
Const VK_F17 = &H80
Const VK_F18 = &H81
Const VK_F19 = &H82
Const VK_F2 = &H71
Const VK_F20 = &H83
Const VK_F21 = &H84
Const VK_F22 = &H85
Const VK_F23 = &H86
Const VK_F24 = &H87
Const VK_F3 = &H72
Const VK_F4 = &H73
Const VK_F5 = &H74
Const VK_F6 = &H75
Const VK_F7 = &H76
Const VK_F8 = &H77
Const VK_F9 = &H78
Const VK_HELP = &H2F
Const VK_HOME = &H24
Const VK_INSERT = &H2D
Const VK_LBUTTON = &H1
Const VK_LCONTROL = &HA2
Const VK_LEFT = &H25
Const VK_LMENU = &HA4
Const VK_LSHIFT = &HA0
Const VK_MBUTTON = &H4 ' NOT contiguous with L RBUTTON
Const VK_MENU = &H12
Const VK_MULTIPLY = &H6A
Const VK_NEXT = &H22
Const VK_NONAME = &HFC
Const VK_NUMLOCK = &H90
Const VK_NUMPAD1 = &H61
Const VK_NUMPAD2 = &H62
Const VK_NUMPAD3 = &H63
Const VK_NUMPAD4 = &H64
Const VK_NUMPAD5 = &H65
Const VK_NUMPAD6 = &H66
Const VK_NUMPAD7 = &H67
Const VK_NUMPAD8 = &H68
Const VK_NUMPAD9 = &H69
Const VK_OEM_CLEAR = &HFE
Const VK_PA1 = &HFD
Const VK_PAUSE = &H13
Const VK_PLAY = &HFA
Const VK_PRINT = &H2A
Const VK_PRIOR = &H21
Const VK_PROCESSKEY = &HE5
Const VK_RBUTTON = &H2
Const VK_RCONTROL = &HA3
Const VK_RETURN = &HD
Const VK_RIGHT = &H27
Const VK_RMENU = &HA5
Const VK_RSHIFT = &HA1
Const VK_SCROLL = &H91
Const VK_SELECT = &H29
Const VK_SEPARATOR = &H6C
Const VK_SHIFT = &H10
Const VK_SNAPSHOT = &H2C
Const VK_SPACE = &H20
Const VK_SUBTRACT = &H6D
Const VK_TAB = &H9
Const VK_UP = &H26
Const VK_ZOOM = &HFB