Ted's Browser crashes every time he tries to open it. Leo says he'll need to clear the cache and reset the browser. He can go into Control Panel > Internet options > Advanced > Reset Settings/Clear Cache. Ted will lose his cached stuff including bookmarks and cookies, but it may fix it.
In Add/Remove programs there's also a "REPAIR I.E." function. Once he has it fixed, Leo suggests downloading Chrome. It's more secure.
He can also download a copy of Firefox through the command line with FTP. Mozilla has information on how to do this at support.mozilla.org