Installing Mac OS 10.5 in a iMac 21.5

Hi,
I need to install the Mac OS 10.5 in a iMac 21.5". Because my HP Officejet 6310 doesn't scan in high resolution with the new Mac OS 10.6.
How can I install the Mac OS 10.5 in new iMacs?
I have a retail CD os Mac OS 10.5.
Thanks!
Paulo

paulobr wrote:
How can I install the Mac OS 10.5 in new iMacs?
I have a retail CD os Mac OS 10.5.
Unfortunately, you probably won't be able to do that. You should only install the OS that was current when your Mac was shipped (plus subsequent updates and versions).
Have a look at:
http://support.apple.com/kb/HT2186
http://support.apple.com/kb/HT2681

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