Disable Esc Key And Cancel Button

I would like some help on disabling the Esc key in a macro and to disable the Cancel button and X on message and input boxes.

My macro is to insert rows in a protected worksheet and another to run a spellcheck, if my users hit any of the above keys during the macro my worksheet is left unprotected and formulas could be deleted in error. I have pasted a copy of my code below,

Sub InsertRowAboveCopyFormulas()
ActiveSheet.Unprotect ("password")
Dim Rng, n As Long, k As Long
Application.ScreenUpdating = False
Rng = InputBox("Enter number of rows required.")
If Rng = "" Then Exit Sub
On Error Resume Next
ActiveCell.EntireRow.Select
Selection.Resize(rowsize:=Rng).Rows(1).EntireRow. _
Resize(rowsize:=Rng).Insert Shift:=xlUp
Selection.Offset(Rng).AutoFill Selection.Resize( _
rowsize:=Rng + 1), xlFill
Selection.Resize(Rng).EntireRow. _
SpecialCells(xlConstants).ClearContents
ActiveSheet.Protect ("password")
End Sub