I've recently been exporting some avi files in Quicktime Pro to the format compatible with iPhone. I've been using my PowerMac G5 for this as I didn't think it was a particularly arduous task and I naturally assumed it could handle it. Well Quicktime gave me an estimate of around 1 hour for a 30 minute 720x480 file - fair enough, but according to the activity monitor I'm only using around 77% CPU power and I have 750MB of RAM free. Is there a way of dedicating more computer resources to speed up this process? I don't want to use the computer for the next few hours so I would be happy to have it somehow dedicated to those threads although I'm not sure if there is a way how to do this. Any advice on dedicating the computer to a specific task for a few hours?