not to sound too *****, but i found a couple interesting things:
in webos/resources/webOS.tar =>
nova-cust-image-castle.rootfs.tar.gz =>
1) /./usr/palm/sounds/ has the default alert.wav, notification.wav, phone.wav, and ringtone.mp3 files in it. This is where to go to change the defaults.

2) /./etc/palm/autoreplace/en_us/text-edit-autoreplace has a list of all of the automatic corrections that the text entry can perform. there are 2475 auto corrections.