Tiger, Panther, powerbook, mac mini & iPod problem...

Is it possible to connect my Powerbook (running on 10.3.9) to my Mac Mini (10.4.1), so they can swap files and/or connect to the internet?

Here's the story:
I just bought a new ipod classic.
It only runs on my mac mini... however my mac mini isn't connected to the internet.
(not wireless and only hard line is already taken)

My laptop is wireless and has internet access.

I want to transfer the pictures and movies I've downloaded on my powerbook to the mac mini, and/or use the powerbook's wireless connection to get online with the mac mini.
But I don't know how or if it's even possible as they're on two different operating systems...

Does anyone know?
Thanks!