I am sure this will be a simple question for most , but I am am about to update from V3 to V 4 and it would seem that I have to uninstall V3 first. 2. After restarting, confirm that you can see hidden files and folders by clicking Start → Control Panel → Folder Options → View and select the Show hidden files and folders option. 3. Click Start → My Computer and then navigate to and delete the following folders: I am doing a 'dry run' to try and check that i haven't missed anything and on point 3 above i can't find any folders to delete. Is it because I haven't yet deleted V3 hence nothing left over or because I have to reboot first and then the hidden folders will appear, if not where do I actually find these folders ?