Do I need to buy Leopard brand new?

[eyeangle]

I just got a second-hand PowerMacG5 which runs up to Leopard. I've got Tiger installed on it but I want Leopard.

I've got the box but lost my retail Leopard install disc that I owed years ago. Is it possible that Apple can replace the disc?

Can I buy a friends second hand retail disc and use that or do I have to buy a brand new version?

(With Windows you need to buy a brand new CD because the license only works with that, OEM versions are illegal to install on a different PC so I'm wondering if the same goes with OS X).

 

[Bear]

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Can I buy a friends second hand retail disc and use that or do I have to buy a brand new version?
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For OS X, the license goes with the physical disc. So yes, buy the one from your friend.