That would be a violation of the License Agreement. The outside of the Mac OS X 10.4 Tiger box says "IMPORTANT: Use of this product is subject to acceptance of the software license agreements included in this package"
The License Agreement says "IF YOU DO NOT AGREE TO THE TERMS OF THIS LICENSE, DO NOT USE THE SOFTWARE. IF YOU DO NOT AGREE TO THE TERMS OF THIS LICENSE, YOU MAY RETURN THE APPLE SOFTWARE TO THE PLACE WHERE YOU OBTAINED IT FOR A REFUND."
The Permitted License Uses and Restrictions say "This License allows you to install and use one copy of the Apple Software on a single Apple-labeled computer at at time."
Apple has the right to set the terms and conditions of usage for their intellectual property. They have the right to restrict the installation of the operating system to their hardware only. They do allow other operating systems to be installed on Apple hardware, like Windows XP, Windows Vista, Linux, etc. It's a reasonable deal for everyone.
Apple has good reasons to restrict Mac OS X to Apple hardware. It allows Apple to provide the best quality systems on the market, it keeps support costs down, and it keeps the price of the products affordable.
I don't want Apple to waste everyone's time and money by trying to support their OS on junk from Dell, HP and everyone else. Maybe someday Apple will allow third-party manufacturers to certify their hardware for Mac OS X, but until then, Apple should not allow it on PC clones.
The License Agreement says "IF YOU DO NOT AGREE TO THE TERMS OF THIS LICENSE, DO NOT USE THE SOFTWARE. IF YOU DO NOT AGREE TO THE TERMS OF THIS LICENSE, YOU MAY RETURN THE APPLE SOFTWARE TO THE PLACE WHERE YOU OBTAINED IT FOR A REFUND."
Like i said, call the Wammmmbulance...