I had a few problems trying to rebuild the hello.exe file using the files supplied from the website.
The .cpp files for in the \examples directory
will compile differently (in terms of *.obj file size)
using Borland 4.52 versus Borland 3.1. In addition
I got link errors in \bc45\bin\cl.lib in the
form of undifined symbols for _terminate,_checknull,
_restorezero, and _cleanup. These problems went
away when I switched to Borland 3.1. I think these
were caused by the linking of the startup.obj file
in \examples\chapter3.
Also the module.mk in \chapter9 may have to be tweeked to explictly point to the location of the math.lib library.