AppleScript - Copy/Replace

I need someone to write following AppleScript for me. There are two Excel Workbooks Workbook 1 Containts 2 columns Column A includes (case sensitive) characters/text to be found and replaced Column B includes (case sensitive) characters/text that will replace characters/text from corresponding cell in column A Workbook 2 contains number of different columns with text with "wrong" characters/text. AppleScript Script Script need to search workbook 2 for text/characters in each cell from column A workbook 1 and replace it with the data from corresponding cell in column B and finish once there is no more data to be searched for in column A.