Start Menu launch from kbd Enable/disable

Hi,

I use the following function which enable/disable the following key combinations
<Ctrl-Alt-Del>
<Ctrl-esc>
<Alt-s>
<Alt-Tab>

Private Declare Function SystemParametersInfo Lib "user32" Alias "SystemParametersInfoA" (ByVal uAction As Long, ByVal uParam As Long, ByVal lpvParam As Any, ByVal fuWinIni As Long) As Long

Sub DisableCtrlAltDelete(bDisabled As Boolean)
Dim x As Long

x = SystemParametersInfo(97, bDisabled, CStr(1), 0)
End Sub

But what I want is as follows.

1) To make <Alt-Tab> to be enabled &
<Ctrl-Alt-Del>,<Ctrl-esc>,<Alt-s> disabled

2) Assign hotkeys to activate different
applications even if <Ctrl-Alt-Del>,<Ctrl-esc>,
<Alt-s>,<Alt-Tab> are disabled

Kindly let me know the solution.

Thanking you
regards

Vipul Shah