Some time ago a friend of mine upgraded his little office network with a Windows 2000 server. Since then he had been using Windows XP Home edition - mainly to just access SMB shares on the server. There were however some pain points with that setup. Profiles were not stored on the server, so the backup to tape drives on the server could not include them. Moreover we had to manually take care of having identical user accounts on all machines to share data among them and grant access to each others printers.So we decided to upgrade to Windows XP Pro, set up Active Directory and use roaming profiles. However because there were several products installed on the different workstations that take a long to time to configure properly we did not want to start from scratch.Unfortunately with XP you cannot just change the product key and all of a sudden Home becomes Professional. For one the keys just do not match - there are even different keys for the retail XP Pro version and the corporate vo…