These links are directly to Microsoft's site, mostly in the Support Online section.
New entries are at the top of the list.
Q177760 Another frequently asked question. Microsoft Excel Environment Q170787 This question is asked very often in the newsgroups. This is useful for pinpointed only the information you want in Microsoft's Knowledge Base. A useful document from Support Online chock full of links. An indispensible tool for cleaning junk out of your registry.