RE Firewire:
Do I take it that I could just connect the old and a new Mac together with a Firewire cable and then 'drag' (transfer) files and file folders from the old to the new?! Would the old even show up on the new, given the disparity of OSs?
Connecting in any other way is not a possibility (for me).
As noted, I also have all files backed up on 700MB CDs, so I could transfer them that way.