I was trying out the new demo of Mudbox 2009, loaded up their default head and sculpted this bust. I then baked out an Ambient Occlusion map using their map baking tool. Speed is pretty good for baking out an AO map. They have added a lot of nice things to this version! In the Zip file there is a Mud 2009 file, an OBJ at the highest sub D level in case you want to view the model in another application and the AO map is saved out as a PNG.
CLICK HERE TO DOWNLOAD THE MODEL!!!