I think I saw where how to fix this problem but it
been a while but I forgot what the solution is.

The problem is that some of my ebooks (help files,chm ) will not display.

I have the ebook on "Microsoft Office automation with Visual FoxPro" and I
can see the index( tree) but not the details. I get the message "The page
cannot be displayed".

I think this has to do with Windows XP service pack 2.