You can pretty much use the same script that I made for your other thing on that site. Just change the socket names and where it's getting the data from and how the data is output. Try making the changes to it and see how you do with it. Then, post what you've changed it to and we'll help with any problems. That way, you'll get a better idea of how to work with sockets.
Btw, if the filename changes, you'll need to have some way of telling the script the name of the file. You may have to grab the name through a second socket that reads the filename from a main page and then uses that in the main socket that gets the data.
