Scan through this post to find a quick solution to getting Windows Help working inside of Vista:
http://www.itwriting.com/blog/?postid=535
I found two copy of Winhlp32.exe on my old Windows 2000 box – one in the \Windows directory and the other in \Windows\System32. You want to use the one in the Windows directory.
Note that this may not give you full functionality for older Windows Help but it should give you enough to get up and running.
