I have windows 2000. I have several documents sent to me in the publisher 2003 format that my 2000 version wll not open. The 2007 version is out and if I am gonna have to spend the money on an upgrade I figure the 07 would be the way to go...BUT...someone told me today that the 07 may change the documents format since they are originally 03, is this true or would the 07 work?