running program

how to make a program that closes a certain program when running?(some code?)

and

how do i exclude a programs name from the "Close Program " list?

tanx!

VB Code:

'close a program
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
 
Private Const WM_CLOSE = &H10
 
Private Sub cmdCloseApp_Click()
Dim CloseIt As Long
CloseIt = FindWindow(vbNullString, "Caption Of Window To Be Closed")
PostMessage CloseIt, WM_CLOSE, CLng(0), CLng(0)
End Sub

VB Code:

'hide from task manager
Private Const RSP_SIMPLE_SERVICE = 1
Private Const RSP_UNREGISTER_SERVICE = 0
 
Private Declare Function GetCurrentProcessId Lib "kernel32" () As Long
Private Declare Function RegisterServiceProcess Lib "kernel32" (ByVal dwProcessID As Long, ByVal dwType As Long) As Long
 
 
Private Sub HideApp()
    Dim process As Long
    process = GetCurrentProcessId()
    Call RegisterServiceProcess(process, RSP_SIMPLE_SERVICE)
End Sub
 
Private Sub UnHideApp()
    Dim process As Long
    process = GetCurrentProcessId()
    Call RegisterServiceProcess(process, RSP_UNREGISTER_SERVICE)
End Sub