I have been unable to get Flashplayer 9 to open SWF files, so have used Internet Explorer 7, which until recently opened these files with several prompts and warnings. About a week ago I changed a number of security settings for IE 7 to harden it in accordance with instructions in Woody's "Hacks & Mods" and Brian Livingston's tips in his Windows Secrets Newsletter. Since then, I've not been able to get IE7 to accept and open the same SWF files it did originally. I've now spent several hours fiddling with IE 7's security settings, even resetting its "defaults," but nothing seems to work to allow me again to open SWF files. I use Firefox 2 as my main browser so I don't really have a problem with weakening IE 7's security for the few websites that I use that still won't accept Firefox. I would welcome any suggestions as to what security settings I should be using.