I have a G5 w quad processors but I bought in 2006. (I paid $5,000 and got the best system I could.) I am running OS 10.4. I just got an HD camera. I use Final Cut Pro v.5 but it's not working properly with the HD video. Is there any way to import and watch HD footage without it jumping? I hate to buy a new computer if I can fix this with software updates or a new video card? Many thanks.