Ive set some up and I get:

Forbidden

You don't have permission to access / on this server.

This is my vhosts file.

Code:
NameVirtualHost *:6020

<VirtualHost *:6020>
DocumentRoot "D:/XServer/Sites/phpPgAdmin"
ServerName *:6020
<Directory "D:/XServer/Sites/phpPgAdmin">
Order Allow,Deny
Allow From All
</Directory>
</VirtualHost>