I have installed this piece of software - http://www.wampserver.com/en/

It runs a php/mysql server on my local machine. I have successfully installed wordpress and it is running locally - woohoo! I can view my development site here - http://localhost/development/ or

I am networked to my designers PC - i can ping his machine. I would like him to be able to see the development site, but obviously its my localhost so neither of the addresses above work. Is there any way I can get him to view my "localhost"?