Hi, I'm trying to connect my MacBook to my hdtv so I have a nice big screen to watch streaming video on. However, once connected, the tv screen only displays my MB wallpaper/background and nothing else from the MB screen including the cursor, icons, menus or (most importantly) streaming video (TNT.tv using Firefox). I'm not particularly Mac or tech-savvy so any help on how to get past this point to being able to watch streaming video from my MB, on my tv screen, would be great. If it matters: TV is a Sony Bravia. MacBook is a white 2008 (4,1) running OS 10.5.8. Thanks for any help!!