Ipod Issues

I hope someone can help me out with this before I vanish. ^_^
So I just got an Ipod... sorta. A friend found one on the bus, gave it to me and said "if you can get it to work it's yours." Well it's mine anyway now.
But the batteries appear to be dead (they were low when he found the Ipod), and there was no cords.
I don't know how to power up the batteries, or change him (it appears to be a sealed case), and if I need specific cords to make the thing work. And do I need to connect the bugger to a Mac to upload music? ^_^
I need the scoop.
So I just got an Ipod... sorta. A friend found one on the bus, gave it to me and said "if you can get it to work it's yours." Well it's mine anyway now.

I don't know how to power up the batteries, or change him (it appears to be a sealed case), and if I need specific cords to make the thing work. And do I need to connect the bugger to a Mac to upload music? ^_^
I need the scoop.