Chart Watching Shania's still holding onto the top spot in the charts for the week of Dec. 20. But hot on her heels are Aaliyah, Whitney, B2K, the Dixie Chicks and more. See 'em all now. music_twain_shania.jpg 60x45 1 lock_icon.gif video.gif http://smilparse.real.com/showcase/cliplists/1202/charts1220.ram 10404094252690 LAUNCH THE COUNTDOWN lock_icon.gif lock_icon.gif lock_icon.gif headline