You can expand a new copy from the install CD-Rom or a service pack
(whichever is newer). This process is two-step; you'll need to first extract
the service pack files from the service pack executable (for whatever
version you're at), then expand the compressed file to the %windir%
directory.
To expand from the install CD-Rom;
expand D:\i386\winhelp.ex_ %windir%\winhelp.exe
To extract the service pack files without installing them, execute;
J:\W2kSP4\W2KSP4.exe /x
Then when prompted, specify a directory to hold the extracted files. In my
example I appended \extracted to the path.
Then you can
expand J:\W2kSP4\extracted\i386\winhelp.ex_ %windir%\winhelp.exe
which expands the file and places it in the %windir% directory. Or expand it
to a floppy and then just copy it over.
