Sorry, I should probably have been more precise. Since it runs in a Virtual machine, I have installed W7 with automatic login for my unique user, so, for me, there is no difference between all these stages. What I was expecting is the launching of PP shortcut, configured in the Startup folder of my Windows session, and set up with administrative privileges (right click + Compatibility problems + This program needs more priveleges + save the privileges at the end, hoping that it will keep them). Since I have stayed under XP until now, I am not used to the UAC functionality but I have thought that I was giving the necessary rights by using this option (as one could do it under Linux). It seems that this is not the case, since I must launch PP manually. Strangely enough, it does not even seem to try to launch PP since I do not find myself with a box asking for authorization, it just seems to ignore the PP shortcut in the Startup menu of my session. I hope that it is enough clear this time. Maybe I am doing something stupid; I have switching directly to W7 from XP and have not had enough time to read about its restrictions...
Sorry for the initial unclarity of my message and thank you for your efforts. Murat
