“Object not found” error with XAMPP

(FOUND A WORKING SOLUTION): http://maff.ailoo.net/2008/07/set-up-multiple-virtual-hosts-on-xampp-for-windows/

 <VirtualHost *:80>
 ServerAdmin webmaster@localhost
 DocumentRoot D:/srv/xampp/projects/testproject/public
 ServerName testproject

 <Directory "D:/srv/xampp/projects/testproject/public">
  Options Indexes FollowSymLinks Includes ExecCGI
  AllowOverride All
  Order allow,deny
  Allow from all
 </Directory>
</VirtualHost>

PHPMailer, assuming we are talking about the same program, is not part of XAMPP (although I am not familiar enough to know if it's incl with WordPress, but I doubt it).

To install PHPMailer, you upload a few files to a folder on your web server (or in the document root, which in XAMPP is the htdocs folder). These files are important:

• class.phpmailer.php --> Necessary
  
• class.pop3.php --> Optional
  
• class.smtp.php --> Optional
  
• PHPMailerAutoload.php --> Useful
  

To load PHPMailer, you need a line like:

<?php
    require("class.phpmailer.php");

or

<?php
    require("PHPMailerAutoload.php");

You don't create email accounts in PHPMailer; you create them on your webserver (or other mail host, like google mail). Then you provide the email account login/password to PHPMailer in its instructions.

Here are some docs and tutorials for PHPMailer:

Tutorial from Apache

Installation Docs

Helpful Answer on SO <-- Also note the (accepted) answer immediately above this one