WinHlp32.exe is required to display 32-bit Help files that have the “.hlp” file name extension. To view .hlp files on Windows Server 2008, you need to install this application.
http://www.microsoft.com/downloads/details.aspx?FamilyID=0468fefd-b54f-4c57-8340-c6dd2ec20c0a&DisplayLang=en
