I am using Excel 2003 with all updates. When I type a keyword into the VBA
"Type a question for help" text box, I get a list of entries as normal.
When I position the cursor over any of the entries, it turns into a hand
with a pointing finget, indicating that the list item is a link. This is
also normal.

When I click on some of the items, I get a window telling me about that
item as I should. However, when I click on other items, nothing at all
happens. It seems that approximately one-half of all the items exhibit
this behavior.

I have tried reinstalling Excel but that does not fix the problem. Any
suggestions will be greatly appreciated.

Thanks.