Create a folder on your computer for the files
Edit your host file to add the site name
Edit httpd-vhosts to add the VirtualHost
Restart Apache using the XAMPP Control Panel


127.0.0.1  //Mywebsite.dev

<VirtualHost *:80>
    DocumentRoot C:Mywebsitetrunkwwwpublic
    ServerName //Mywebsite.dev
    <Directory C:Mywebsitetrunkwwwpublic>
        Order allow,deny
        Allow from all
    </Directory>
</VirtualHost>