PearPC

Sim Mac OS X on Wintel ...

PearPc is a sim. on wintel system.
It's may be the first one sim. software on wintel system.
This software is still in 0.3.1 release. (today)
In the news, it's still need a great PC running for it.

Here is the sourceforge website
The wired news : OS X Makes Slow Debut on PC