Hey, guys. I recently found a great deal on an iMac G5. However, it comes without a hard drive, and the seller doesn't have the original OS disc. I've got plenty of HDDs lying around to get storage on it, but no system discs compatible with the machine, so I was wondering if any of you know a secure way of getting an old PPC compatible version of OS X? I'm wary of a lot of downloads on the internet, since I want an original version not infected with loads of malware, hehe. Thanks!