Windows XP işletim sisteminde başlatın ismini değiştirme
Formunuza 1 textbox, 1 command buton ekleyin.

Private Const WM_SETTEXT = &HC
Private Const WM_GETTEXT = &HD
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Private Declare Function SendMessageSTRING Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As String) As Long

Public Sub SetStartCaption(str As String)
   Dim StartBar As Long
   Dim StartBarText As Long
   Dim sCaption As String

   StartBar = FindWindow("Shell_TrayWnd", vbNullString)
   StartBarText = FindWindowEx(StartBar, 0&, "button", vbNullString)
   sCaption = Left(str, 6)
   SendMessageSTRING StartBarText, WM_SETTEXT, 256, sCaption
   Exit Sub
   End Sub
Private Sub Command1_Click()
SetStartCaption Text1.Text
End Sub