Name-based hosting...serveralias goes to external site with same name

OK, I have been away from this project for a couple of years, so am a bit rusty.  But...

Below is an extract from my httpd-vhosts.conf file (and it is included in httpd-vhosts.conf).

When I enter www.refactor.com in my browser, I expect my named host to take preference over the real external site of that name, but it doesn't.  Where am I going wrong please?

# Use name-based virtual hosting.
#
NameVirtualHost *:80

#
# VirtualHost example:
# Almost any Apache directive may go into a VirtualHost container.
# The first VirtualHost section is used for all requests that do not
# match a ServerName or ServerAlias in any <VirtualHost> block.
#
<VirtualHost *:80>
    ServerName localhost
    DocumentRoot "E:/xampp/htdocs"
    <Directory "E:/xampp/htdocs">
	Options +Indexes FollowSymLinks +ExecCGI +Includes
	AllowOverride AuthConfig FileInfo
	Order allow,deny
	Allow from all
	</Directory>
</VirtualHost>

## My first domain ##

<VirtualHost *:80>
    ServerName myfirstdomain.com
    ServerAlias www.myfirstdomain.com
    DocumentRoot "E:/xampp/htdocs"
</VirtualHost>

## My second domain for refactoring the FOBG site ##

<VirtualHost *:80>
    ServerName refactor
    ServerAlias www.refactor.com
    DocumentRoot "E:/xampp/htdocs2"
    <Directory "E:/xampp/htdocs2">
	Options +Indexes FollowSymLinks +ExecCGI +Includes
	AllowOverride AuthConfig FileInfo
	Order allow,deny
	Allow from all
	</Directory>
</VirtualHost>