Attached Link: http://www.renderosity.com/messages.ez?ForumID=12356&Form.ShowMessage=1509240

Here's a good cloth room introduction: http://www.nerd3d.com/Tutorial/Cloth/Cloth.htm But it's more oriented toward clothing. Still, it shows the basics, and what the click where. For specifics of draping over an object, check out the thread in the link.