Can I upgrade to 60gb, and how?

Can I upgrade to 60gb, and how?
I want to upgrade my 30 gb iPod photo to 60 gb ipod? what do I need? is it possible? I am thinking that I need 40 or 60 gb back plate to accommodate 60 gb battery, right? is battery same for 30 and 60? do I need to change/upgrade ear bud fittings etc.? thanks, adis

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