mod_rewrite must be enabled "HOW"

It should always be enabled by default. Check your /usr/local/apache/conf/httpd.conf that you have:

Code:

LoadModule rewrite_module     libexec/mod_rewrite.so
AddModule mod_rewrite.c

And that there's also the following outside of any VirtualHosts:

Code:

<IfModule mod_rewrite.c>
RewriteEngine on
</IfModule>   

(and there aren't any further occurances turning it off). If all that is OK, then it's more likely a problem with the accounts local .htaccess file.