Some time back I found a cd full of icons at a store that sold old softwares. But the file format has been tha same even in Vista. Unfortunately the "stylish" ones that would look better with Vista were too dim in color for the screens here. You can find a ton of icons by searching around for them. Vista icons can be found at sites like
http://www.vistaicons.com/ and
http://www.vista-icons.com/