if you want to display hidden files on your computer you can do it like this
    1.) if you want to display some hidden files in a folder
         check the checkbox "view ==> Show Hidden Files" (or Ctrl + H)
    2.) if you want to display your hidden files always you can do it with gconf-editor like this
        2.1 -goto Terminal or Run Application (Alt + F2)
        2.2 -type "gconf-editor" and press Enter
        2.3 -goto desktop => gnome(or something else) => file_views
        2.4 -then Check the check box "show_hidden_files"

        look at the screen shot given in below to get a clear idea..