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Here here. I did the exact same thing. Got her an iBook, wireless network, set it up and left.
I don't even know the passwords on this thing anymore.
We ran into the iBook logic board problem but that was resolved promptly, and I finally stuffed another 512M into it (we were using the stock 128M for almost a year -- quite usable, just slow transitions from app to app).
I shared the printer on my W2K box, and the durn thing Just Worked (though I recently reinstalled the printer, so now it's broken for her...I'll get 'round to it soon enough).