i tried getting a .htaccess file running on my os x box for ages but never did figure it out, i think the default install of apache stops them so you may need to edit your apache config file first
hope this helps
I have it running np. Open up terminal and change to the your install directory.
cd /library/web server/documents (if you’re using the main)
cd ~/sites/ (if you’re using the ~username site in your home folder)
You may need to add another folder onto that path depending on the exact location, but once there type
touch .htaccess
chmod 666 .htaccess (you might be able to substitute 644 depending which location you’re using and your apache setup.)
Your .htaccess should now be there and be writeable by wordpress.
You might also have to edit your username.conf file. Mine contains:
<Directory "/Users/ian/Sites/">
Options Indexes MultiViews
AllowOverride all
Order allow,deny
Allow from all
</Directory>
<Directory "/Library/WebServer/Documents/">
Options FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all
</Directory>
You will have to stop and restart apache for it it to work.