Network-based data trasnfer

Hey, I would like to make a network order form that one client would use a flash-based GUI that would output data to a file (on local puter or remote on network) which would auto-update on the other client’s computer.

Basically I was thinking install php+sql and work off there so that way I won’t need to rely on the net. I’m really new to php+sql, so I was just thinking of doing txt, or xml maybe… anything that is easier for me :D.

What would you guys suggest for me to do?