I have a wamp server (Version 2.2 on Windows 7) running on my computer that works perfectly well for localhost access. But now, I need to grant access to a collegue on the same subnetwork. How to achieve that?

My collegue receives a 403 error from the browser.

I have 2 vhost :

<VirtualHost *:80>
    ServerName localhost
    DocumentRoot "D:/Workspace"
</VirtualHost>

<VirtualHost *:80>
    ServerName oscar
    DocumentRoot "D:/Workspace/SMACS3/web/htdocs"
</VirtualHost>