I use external FW drives for these purposes all the time. You can copy over your existing iMovie or iDVD projects to the FW drive and go from there. Or, you can select to create a new project, but select the FW drive from the Open/Save dialog and save it there. It shouldn't affect performance at all Michael On Apr 13, 2005, at 12:49 PM, Ean Kingston wrote: > I am also about to purchase an external firewire drive for my iMac G4. > The > spec says I've got 2 firewire 400 ports. How would I go about getting > iMovie and iDVD to use the new firewire drive to store their project > files? And, would this significantly slow down performance of either > iMovie or iDVD?