* you can go to a [http://www.webmaster-toolkit.com/htaccess-generator.shtml public htaccess/htpasswd generator] and copy the contents of what the "And this is what your .htpasswd file should look like..." box has

* or you can use the htpasswd command (first time with -c)

The file should contain lines like this: USERNAME:3Ce3F4zRcVf42

The file should be owned by apache:apache and have 600 permissions, so copy it over, then, as root: