I have used iMovie for years in standard def. I currently have a Sony SD miniDV and looking to upgrade to HD. I have a 1 yr old Macbook Pro, an external FW800 drive and iMovieHD (may upgrade to the newest iLife). Typically on vacation I'll shoot 2 hrs of video, import them to iMovie, edit down to the 1 hr for max quality, burn to DVD and watch on my HDTV (in SD of course). I need help getting started. What limitations does HD have? What can I do and what can't I with what I have? Do I need AppleTV to watch them on my HDTV? Even if I only shoot in HD now to have the quality for later when/if Apple incorporates Blue Ray, that's fine with me. Thanks for your help.