XML that changes with user selections

Hi,
can u help me out with the following:
i want to design a XML file that changes based on user input. for each input given by the user, the XML file should indicate the corresponding change. ie if the user selects a file from using a graphical interface, the XML should incorporate that file.
my main concern is to define a XML file that incorporates various data selections made by the user at run time.
any useful links on the above topic is also welcome.
thanks in advance.

What technologies and languages will you be using?

Hi,
i am using Delphi for designing the graphical interface. once the interface is createad and the XML is defined, i plan to transmit this page to a web server. servlets present in the web server interpret this XML file.
my part is to create the dynamic XML files to be transmitted over the server. the server side programming is taken care of by another programmer.
thanks in advance

Wellif i get it right, you have 1 xml file on the server that you want users to edit through GUI. I dont know Delphi but it's pretty easy doing it in ASP or ASP.NET. Just think of guestbooks where visitors actually post their data via a form to an xml file. (which could well as be a database of choice.)
I am following you?

This could work, this form i created with javascript converts the user inputted data into my xml format and then sends it.

here is the link:
http://www.gre.ac.uk/~tk301/3dmm/newreview.html