Ambient occlusion with Mental Ray

<body> <center>Sorry you do not have frames enabled. Here is the link of the tutorial:<br> <a href="http://4sidedpolygon.com/blog/wp-content/uploads/2008/04/final2.jpg">http://4sidedpolygon.com/blog/wp-content/uploads/2008/04/final2.jpg</a></center> </body>