I've followed the Dreamhost Wiki's instructions for installing Alternative PHP Cache (APC), but when I get to updateing php.ini, I get stuck. I can only access my php.ini through the shell, and it's read-only.
I've tried creating a custom php.ini and setting .htaccess to find it with "SetEnv PHPRC /home/account/domain.com/folder" but although phpinfo now shows the PHPRC variable set to that folder, it doesn't actually use the php.ini in it. When I try to use "AllowOverride Options" or "AllowOverride All", I get a 500 error.
The custom php.ini Wiki page only describes how to set it up with FastCGI and as far as I know, mod_php is needed to use APC. Please help.