\r\n1) Edit it how?\r\n\r\n\r\n
With an editor.
\r\n\r\n\r\n2) Define "appropriately".\r\n\r\n\r\n
In the case of /etc/fstab: you'll need an entry for each mounted partition. This would include the device file, mountpoint, filesystem type, mount options, and dump/pass values.
\r\n\r\nAs a practical matter, I'll assume you largely keep your partitioning intact (I'd recommend: /, /boot, /tmp, /usr, /var, /home, and possibly /usr/local or others). Just make sure the device files correspond the the partition numbers on the new system.
\r\n\r\nI'd hope that's relatively clear. Rick dives into the details.