Tutorial - Press-pull tool in AutoCAD 2011?

Here is the tutorial.
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Step 1:
Start AutoCAD.
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Step 2:
Draw a closed profile using line tool.
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Step 3:
Under solid tab select press pull or enter PRESSPULL in command manager.
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Step 4:
Click inside the region bounded.
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Step 5:
Now assign the height.
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Step 6:
Now draw a circle at mid point of the edge.
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Step 7:
Again select press pull and extrude it downward. Since there is already material therefore it will remove material.