modify the PostgreSQL Setup Wizard

Hello,

Yes, I've searched though the archives and can't seem to find the answer I'm looking for.

I would like to modify the PostgreSQL Setup Wizard to only display certain options. Only provide the user with one option as oppose to a number. i.e. Driver: ODBC.

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?

Thanks in advanced. Much appreciated.