This is how you can use..
<?php
require("class.phpmailer.php");
$mail->From = "youremail@domain.com";
$mail->FromName = "yourname";
$mail->Host = "smtp.domain.com";
$mail->Mailer = "smtp";
// Plain text body (for mail clients that cannot read HTML)
$text_body = "Hello user", \n\n";
$text_body .= "Your message to the user.\n\n";
$text_body .= "Regards, \n";
$text_body .= "Administrator";
$mail->Subject = "Here is the subject";
$mail->Body = $text_body;
$mail->AddAddress(useremail, username);
$mail->AddStringAttachment(attachmentfile, "attachfilename.ext");
if(!$mail->Send())
echo "There has been a mail error sending to useremail"<br>";
?>
This is a example on how you can use the class.
Change the variables to the ones you want it to be.
For the files, look under this line and change the attachment file.
$mail->AddStringAttachment(attachmentfile, "attachfilename.ext");
Depending on your upload form code, you should change the "attachmentfile" to "$_FILES['pictures"]["name"] where pictures refer to the form name.
It is just a simple example. Look through and see if you understand.