I would like a folder in my dock of some of my most-opened documents. I can make a smart folder (with the rule 'documents opened in the last week') but, when it's in the dock, it does not open as a stack. I could choose my most-opened documents and put them in a standard folder but then my most-opened Word docs (for example) would not then be with all my other Word docs in the Word Documents folder. What I want seems very simple - a smart folder that opens as a stack - but I can't do it!! Any suggestions?