I have a 20" iMac G5 2GHz/2GB and I'm thinking about maybe buying a Canon HV20 for a couple of upcoming holidays. I'm completely new to the whole video thing. What I'm unsure of is whether my computer will cope well/at all with doing basic editing (iMovie 6/8?) or displaying the files. I know the display won't fit 1080i video completely, and it certainly can't cope with H.264 1080p decoding, but what about the HDV (that's MPEG2 isn't it?) stuff that comes out of a tape-based camera? Can I play around with that, or will my computer specs be realistically limiting me to SD video? Thanks for any advice, Jonathan.