Hello Michael! On Tuesday, July 17, 2012 you wrote in [BK]: MC> If I make these changes and have my new Windows 7 64 bit computer as the MC> master one, I will not be able to easily update the XP ones! I've Bk on 3 Computer (Windows 7, Vista and XP). On all PC's are the program files and data files in the same directory: C:\bk\ C:\bk\picture C:\bk\text C:\bk_media\ With this system it's very easy to copy the complete directory from Widows XP to Wndows 7 or Vista. You must not change the links. The backup of the data should be EXTERN. -- Greetings, Otmar Mayr