Can anyone tell me if I can install Mac OS X on the HP Pavilion a350n?

Computer specs: HP Pavilion a350n Desktop PC Product Specifications - c00041542 - HP Business Support Center

The only change I made to the system is that I maxed the RAM. It has 4 x 512 MB. Everything else is the way it came from the factory.

Please post what I need to do to install either 10.5 or 10.6 on this computer.
Also, if it is not possible please let me know.

Thanks in advance.