WinXP(home)SP2. A limited access a/c has been set up for Net browsing, for which the default security setting is 'read and execute', but there are certain programmes, e.g. Adobe and anti-virus and firewall, for which I would like to have full control. The key seems to lie in 'Advanced Security Settings', where the Permission entry offers 6 options under the 'Apply onto:' menu. These are:- This folder, subfolders and files. This folder only. This folder and subfolders. This folder and files. Subfolders and files only. Subfolders only. Files only. Does anyone know, please, the correct choice to achieve my aim and, as supplementary question, do I start with C:\ and work my way down through the folders individually? Thanks for any help.