How do I enable mod_rewrite on a hosted account?
Is this something I can do myself, or does the host have to do it?
This file also has an AllowOverride directive, which specifies whether .htaccess files can override the default configs.
So even if mod_rewrite module is loaded, .htaccess files may not be allowed access.
Generally, in a shared hosting environment, the Host has control over this configuration file, but it is the one to ask about.