httpd.conf - Setting up a second "localhost" to a different localpath - apache

Question

I'm using XAMPP on my Windows 7 computer when doing web projects. In my httpd.conf file, DocumentRoot is set up simple, like this:
DocumentRoot "D:/Users/Thinkpad/DropBox/MAMP"
<Directory "D:/Users/Thinkpad/DropBox/MAMP">
Options Indexes FollowSymLinks Includes ExecCGI
AllowOverride All
Require all granted
</Directory>
This location is used for work projects, and now I want a separate location just like this one, for private projects. Just have it to point to a different localpath, D:/Users/Thinkpad/DropBox/Web, and preferrably name it something other than localhost. Something like private or something. So my URL will end up looking like this http://private/mywebproject
I've tried looking at documentation for this, but I can't get it to work. Do I need to edit my hosts file for it to work? And what else needs to be set in httpd.conf file?
Edit: So here's the final solution from the httpd-vhosts file
<VirtualHost private:80>
DocumentRoot "D:/Users/Thinkpad/Dropbox/Web"
ServerName private
ErrorLog "logs/dropbox.local-error.log"
CustomLog "logs/dropbox.local-access.log" combined
<Directory "D:/Users/Thinkpad/Dropbox/Web">
AllowOverride All
Order Allow,Deny
Allow from all
Require all granted
</Directory>
</VirtualHost>
<VirtualHost localhost:80>
DocumentRoot "D:/Users/Thinkpad/Dropbox/MAMP"
ServerName private
ErrorLog "logs/dropbox.local-error.log"
CustomLog "logs/dropbox.local-access.log" combined
<Directory "D:/Users/Thinkpad/Dropbox/MAMP">
AllowOverride All
Order Allow,Deny
Allow from all
Require all granted
</Directory>
</VirtualHost>
I had to add the regular localhost as well, even though it was already defined in httpd.conf file.
Also, hosts-file needed to have these two lines:
127.0.0.1 localhost
127.0.0.1 private

Answer 1

You have to add new virtual host
by default in C:\xampp\apache\conf\extra\httpd-vhosts.conf add something like
<VirtualHost *:80>
ServerName private.localhost
DocumentRoot D:/Users/Thinkpad/DropBox/private
</VirtualHost>
and after that you have to edit windows hosts file
append this
127.0.0.1 private.localhost
then restart the xammp
You may take a look to one project that makes this easy https://github.com/vkdimitrov/VhostsEditor