You can backup most any file using the backup/restore feature.
edit your filetool.list copy located at your backup location to list your chosen files.
for ex: copy your filetool.list file to your hda2 partition. A generic copy is provided in your /home/damnsmall directory.
add the line "/home/damnsmall/.phoenix" in your new filetool.list file.
Run " select backup/restore from partition, under 'system' in your menu, and enter the correct location.
for ex: hda2
Run "backup" from the menu.
then , when you bootup, press F2 for options, type "dsl restore='what partition you backed-up to' "
for ex: dsl restore=hda2
This would restore/overwrite the /home/damnsmall/.phoenix file.
Run Firefox, and all your bookmarks, cache, passwords, etc. are back.
You can do the same with your files containing your iptables, hosts, etc.