Favorites icon’s change from “E” to websites icon w/IE 7???

Does anyone know how to disable Internet Explorer 7 from changing the standard “E” icon in Favorites over to the website icon automatically? I prefer to just have the “E” show, but each time I go to a particular website, the icon converts to that website’s icon instead of back to the “E” like IE 6 did…many thanks to anyone who might know!