How to campare two excel sheets in QTP ???

This code will open two excel sheet and compare each sheet cell by cell, if any changes there in cells , it will highlight the cells in red color  in the first sheet.

Set objExcel = CreateObject(“Excel.Application”)
objExcel.Visible = True
Set objWorkbook1= objExcel.Workbooks.Open(“C:Documents andSettingsmohan.kakarlaDesktopDocs1.xls”)
Set objWorkbook2= objExcel.Workbooks.Open(“C:Documents and
Settingsmohan.kakarlaDesktopDocs2.xls”)
Set objWorksheet1= objWorkbook1.Worksheets(1)
Set objWorksheet2= objWorkbook2.Worksheets(1)
   For Each cell In objWorksheet1.UsedRange
       If cell.Value <> objWorksheet2.Range(cell.Address).Value Then
           cell.Interior.ColorIndex = 3′Highlights in red color if any changes in cells
       Else
           cell.Interior.ColorIndex = 0
       End If
   Next
set objExcel=nothing

Please let me know if any question/suggestion.
Thanks,
Shahadat Khan