Cannot Browse to freepbx Folder During installation Process

I am following the Manual Install instructions for installing freepbx with freeswitch on my Centos machine. I got to step 7. “Browse to http://yourserver/your/web/directory/freepbx/”, but my browser says: "Firefox cannot establish a connection to the server at

Does anyone know why I could get this error? I checked out freepbx into the folder /home/jerry/downloads/freepbx/freepbx-v3/, so I am using the following literal browser address:

I would appreciate any help.

Thanks and Best Regards,