>is there anyone can help me to code the pop-up menu so that i can manipulate by my code....

You can't modify the system popup menu but you can create you own. I don't know if it is your question but here is the way of creating your own:
1- Create a regular menu on a form (normally invisible).
2- In the MouseDown event of your control, display the popup menu like this:
Private Sub Text1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
If Button = vbRightButton Then
Text1.Enabled = False
Text1.Enabled = True
Me.PopupMenu mnuTest
End If
End Sub