Admin Content in php5 + xml (no mysql)

Hello,

I have read some books, blogs and tutorials about managing data in
php5, but all are focused on mysql, instead native xml. They talk
about the new php5 xml functions, xml as web services, and so on. I
haven=B4t found any example that fits this question, because all of
them .

I need an admin content, made in php5 and xml (no mysql), to update
the images and text of a flash site. Some simple page with a form,
wich fields are:

PAGE1> title, description and image (for image uploading to the
webserver).
PAGE2> title, description and image (for image uploading to the
webserver).
PAGE3> title, description and image (for image uploading to the
webserver).

When these fields are updated, the data would be stored in a xml file,
which will be used in the flash file to dinamically show it. That=B4s
all.

I know how to make the xml work with the flash file, but I don=B4t know
how to make the form shows, write and update the xml file.


Thanks in advance for your help,

Pablo.