I use firefox as my default browser. IE and chrome are used as secondary browsers. Apart from these, i need to have a alternate browser. I tried opera, but when installing it, opera automatically imported all my bookmarks and other profile data from firefox folder. I really had a hard time safely deleting these files that opera made a copy, without harming the original files which firefox uses. I don't want this to happen. Here's the situation: Now, i want to install other browser or re install opera. How do i make the firefox profile folder to be accessed only by firefox.exe and me(the administrator)? Can this be done via security tab under folder properties?