title: Excel column difference
body: <p>Sheet 1 has some information in as well as a serial number for each product. This was completed in June 2012.</p>
  
  <p>Sheet 2 has had the information modified, as new products have come in, this has been updated from June 2012 until now.</p>
  
  <p>I want to find out the new items which have been added without doing it manually, I know I will need to do it with serial numbers but how?</p>
  
  <p>Thanks.</p>
  
  <p>P.s. I have office 2003 if this helps.</p>