1° "Arrastra al formulario el objeto ToolTip, verás que se te añade en la parte inferior, y que desde ese momento ya tienes disponible la propiedad en cada uno de los objetos en lo que aplique esta propiedad, como TextoBox, Button, etc".
2° Revisa esto:
http://www.planet-source-code.com/vb...2095&lngWId=10
o tambien puedes hacer lo siguiente en tu formulario:
Imports System.Runtime.InteropServices
Public Declare Function GetSystemMenu Lib "user32" (ByVal hwnd As Integer, ByVal bRevert As Integer) As Integer
Public Declare Function GetMenuItemCount Lib "user32" (ByVal hMenu As Integer) As Integer
Public Declare Function RemoveMenu Lib "user32" (ByVal hMenu As Integer, ByVal nPosition As Integer, ByVal wFlags As Integer) As Integer
Public Declare Function DrawMenuBar Lib "user32" (ByVal hwnd As Integer) As Integer
Public Const MF_BYPOSITION = &H400&
Public Const MF_DISABLED = &H2&
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim hMenu As Integer, nCount As Integer
hMenu = GetSystemMenu(Me.Handle.ToInt32, 0)
nCount = GetMenuItemCount(hMenu)
Call RemoveMenu(hMenu, nCount - 1, MF_DISABLED Or MF_BYPOSITION)
DrawMenuBar(Me.Handle.ToInt32)
End Sub
slds.