uuhh, what more do you need to know than switching the renderer over to mental ray for an AO render?
it's not like it relies on final gather or global illumination or caustics
anyway, that funkyness that you've circled i think is caused by the way your model was made
the edges are probably in funky places
show us a screen shot of the wire
that's a "Ch" pronounced as a "K"
Computer skills I should have:
Objective C, C#, Java, MEL. Python, C++, XML, JavaScript, XSLT, HTML, SQL, CSS, FXScript, Clips, SOAR, ActionScript, OpenGL, DirectX
Maya, XSI, Photoshop, AfterEffects, Motion, Illustrator, Flash, Swift3D