Now first of all I'm not a programmer or a web developer, I'm a finance intern that got stuck creating one heck of a web site. What I'm having a problem with is one page that needs to do a few things:
1. Download a text file from the internet.
2. Format the text file so that I can put it on the web page as a table.
3. Post the data, and keep the data that was in the table already.
4. Do this every half hour on the half hour with an automatic refresh.

Now after looking through the board I've found the code to download the file, but the problem is that the number and name of the files changes every hour, as well as having a new name each day. There is one file per hour per day.

I think I can figure out how to format the files once I've got them downloaded, but I'm not sure about this.

I have no idea how I'm going to refresh it every half hour (and it's at every :30 not every half hour, so it needs to refresh at 9:00 and 9:30 and 10:00 etc....) and how to add to the table without losing the stuff that's already in the table.

I would really appreciate help with any part of this, or all of it if you can.

Thanks in advance.