Even te lui om het te vertalen ->
Right the simple answer is wamp is configured, by default, for local development, to keep those new to Apache and MySQL safe from attack.
So its security is set to only allow access to Apache from the localhost address ( 127.0.0.1 ).
Now if you want to allow other PC's in your home network to see the website you have developed you need to change that security a little so that Apache will accept access attempts from then. Currently it is just rejecting any communication from any IP address other than 127.0.0.1.
The simple method to open up Apache is to use the wamp manager icon in the system tray.
left click on it and select the 'Put Online' option.
This will tell Apache to respond to any ip address in the universe, and server pages for their requests.