HideViewTaskBar

Dim hWnd1 As Long
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
(ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, _
ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx _
As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
Const SWP_HIDEWINDOW = &H80
Const SWP_SHOWWINDOW = &H40
'When you want to hide the Taskbar, use this code:

hWnd1 = FindWindow("Shell_traywnd", "")
Call SetWindowPos(hwnd1, 0, 0, 0, 0, 0, SWP_HIDEWINDOW)

'and when you want to show it again:

Call SetWindowPos(hwnd1, 0, 0, 0, 0, 0, SWP_SHOWWINDOW)