Hi, we have Quickbooks MAC 4.0 (Quickbooks 2000) The box with the MAC software says Quickbooks 4.0 release M12a. On the quickbooks website it says that it should be able to upgrade but it won\'t do that. We need to update all company files to Quickbooks Pro Mac 2007 we have quite a few companies. We need someone to do 1 and show us how to do it. We will send you the file.