Need help on upgrading operating system from Mac OSX 10.3.9

We have a Imac G5 with Mac OS X v 10.3.9. We want an upgrade to run new ILife stuff. We don't know what we are doing.
What should we get to update the operating system, where, and how do we upgrade the system?
Are there any particular requirements that my computer will need? How do I know that I have them?
Is there anything in particular in the System Profile that I need to make sure that I have?

You don't say what iMac G5 you have, but here's the *Mac OS X 10.5 Leopard installation system requirements* You may have to increase your RAM. A minimum of 1GB is recommended. If you click on About This Mac, you will see how much RAM is currently installed.
Leopard is no longer available at the Apple Store *but may be available by calling Apple Phone Sales @ 1-800-MY-APPLE (1-800-692-7753)*.
Suggest you download the two PDF documents at the top of this link.
 Cheers, Tom
Message was edited by: Texas Mac Man

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