need to replace HD on iBook (770MHz)

[Luna Hector-r54293]

My wife's iBook will not boot. I can't get it to come in target disk mode or to boot off of the CD or an external firewire HD that i have.

there is some data on it that she is desperate to retrieve. despite my admonitions about backing her data up, she hasn't done it regularly.

the laptop is under warranty. i'm not really concerned about that, i'm pretty sure i'll get it fixed. i just don't want to send it in w/o backing up the data that's on it. I've talked to a friend of mine at the apple store and he tells me that if the tech feels that he needs to wipe the HD to reach a solution he will.

i have a Ti550 and replaced it's 20GB HD w/ a 40GB (the powerbook was extremely easy to get to). I want to put 20GB HD i pulled from the powerbook into iBook and keep the current one, which i'll put into a firewire enclosure.

i found this site (http://uk.geocities.com/ibookupgrade/), but i don't think it applies to my iBook. for one, i don't have the two screws he points to in the picture of the cd-rom bay. and two, i removed the screws he did indicate and the bottom showed no signs of wanting to come off.

does anyone know of any site or doc that refers to this model. i'm no computer neophyte and regularly delve into the guts of systems w/ no fear; on desktops, i don't like getting into laptops w/o a doc to guide me.

the specs on the system as shipped are:
12", 700MHz G3, 128MB, 20GB, DVD/CD-RW combo.

any help would be great. thanks...
______________________
Hector Luna
Motorola Global Infrastructure Solutions
Phone: 480-413-3609
Pager: 877-529-2017 (Skytel 2way)
Email: hectorluna at motorola.com