Need text box to read without drop down menu

Hi, i was hoping someone could help me with this problem i have:

I got an open source flash file that uses php to write to and read from an external text file. only problem is that the text box that previews the text can only preview if you choose the file from a drop down menu. i was wondering if you can take the drop down menu so that when you save the text in the edit text box the text automatically appears in the preview box. i want to use this file cos its got a neat url parser in the php… it really helps. i hope i was clear and would be grateful if anyone at all had some insight into doing this. here is a link where you can dl the files: http://www.flashkit.com/movies/Scripting/Using_External_Files/Linkwrit-WD_Zitma-7759/index.php (by WD Zitman - from flashkit.com)

cheers!