[Koha] Koha install on a Mac - Apache2

I've partially installed koha-3.00.00-stableRC1 on a Mac running Mac OS X 10.5.4 Darwin 9.4.0, and apache-2.2.9. Apachectl is accepting directives. However, the Koha install instructions for 3.00.00 say... 6. sudo a2enmod rewrite 7. sudo a2ensite koha && /etc/init.d/apache2 reload and I can't find these utilities amongst the Apache stuff downloaded, nor on the apache.org site (but I think I am getting punchy). I gather that they just copy config information into subdirectories of /etc/apache2.... but what info and from where? Thanks, Chris Brown-Syed cbrownsyed@cogeco.ca