Hi Gmeister4,
To password protect an individual file:
1. Create a file named .htpasswd and place it above your root directory, so visitors can't access it. For example /home/accountname/.htpasswd
2. Create an encrypted password using htpasswd (if you have command linux access) or use a tool such as
http://www.htaccesstools.com/htpasswd-generator/
3. add the generated username and password to the .htpasswd file, should look something like: privateuser:$apr1$G6l1bvsQ$Bop16v4jbGOlDd/3.YdFl0
4. Navigate to the directory where the file that you would like to password protect is located.
5. create a .htaccess file in this directory and add the following to the file.
<FilesMatch "examplefile.extension">
AuthName "Private"
AuthType Basic
AuthUserFile /home/username/.htpasswd
require valid-user
</FilesMatch>
replace examplefile.extension with your file's actual name.
This will protect only the specified file.