WordPress MU

in wp-config-example.php, what should i change in terms of $base and path_current_site?

should i change 'BASE' to '/', or just leave it to 'BASE'?
should i change 'current_site_path' to 'blogs' or just '/'?

is this correct?

define('DB_COLLATE', '');
define('VHOST', 'VHOSTSETTING');
$base = '/';
define('DOMAIN_CURRENT_SITE', 'current_site_domain' );
define('PATH_CURRENT_SITE', '/' );
define('SITE_ID_CURRENT_SITE', 1);
define('BLOGID_CURRENT_SITE', '1' );

Before Installing WPMU, you should read
http://trac.mu.wordpress.org/browser/trunk/README.txt
It will save you a lot of grief and confusion.
To answer your question, per WPMU readme, you don't touch the wp-config file at all, it will be configured during WPMU installation.

If you;re getting a message that says you need to create one, do this:

http://wpmututorials.com/installation2/installing-in-a-subfolder/