Kath,
> Which directory are the files located in, after having successfully
> installed PostgreSQL on my PC. How can I access the source code of these
> files? Is it possible to extract the files from postgresql-8.2.exe
> windows installer package?
You need to join the mailing list of the pgInstaller project, where this
code lives:
http://pginstaller.projects.postgresql.org/
Have fun!
--Josh