if you'd be so kind...I've had my iMac for almost a year, but have yet to make the big switch totally. I am getting an external drive today to store music, photos, etc. Simply enough to set them up and have items go directly to it instead of internal drive? I know it is, just want peace of mind MY big ?...I have lots of music on itunes on my pc...can I take it off the pc and out onto the external to use with my imac? Still have to do two separate partitions, or? Or, easier to get all my music onto ipod, then use Expod to download to the external? Once it is all on the external, how do I call it up, easily? itunes automatically search to play music from it and save new music to the external or do I have set it up or assign things differently? Thanks for any help.