Woott. I'm here...
Macintosh OS 10 for x86.
Yes its possible....
I actually download the opensourse x86 version of this. Have not tryied yet.. Cause its totally texted based. There is very little GUI for it right now. I THINK..
Installing the software.
http://www.opensource.apple.com/projects/darwin/6.0/install.x86.txt
Booting on x86..
http://www.opensource.apple.com/projects/documentation/howto/html/Booting_on_x86.html
Apple is unlike Microsoft. It actually has GREAT information.
MacRumors.com's article
http://www.macrumors.com/pages/2002/08/20020830181129.shtml
Mac Edition's article
http://www.macedition.com/nmr/nmr_20021112.php
The information is out there.
Oh.. if you download, from ANYWHERE, the OS 10 images. DO NOT MOUNT THEM.

They have a device that knocks them out.
If more info is needed let me know.
Cheers,
Me.