creating new XML from existing XML file

Hi,
i have an XML file given below:

<selection>
<ele id="1">C:\My Documents\abc.jpg</ele>
<ele id="1">C:\My Documents\abc.jpg</ele>
<data id="1">C:\My Documents\dat1.txt</data>
<data id="2">C:\My Documents\dat2.txt</data>
</selection>

now using a HTML form, the user selects "abc.jpg" and "dat1.txt"
now i want to modify this XML file so that a new XML file is generated that contains only these two files that the user has selected.
how should i proceed? thanks in advance.

Hi Fip.

I posted some examples for creating/appending xml documents in both asp and php at this posting: http://forums.devshed.com/t128983/s.html. It should give you a start. Basically you're going to pass those form values to the asp or php page and then write them to a new xml file. Take a look at those postings and then if you have further questions, let me know and I'd be happy to help.