Regarding interface


i went thru the xml photo gallery and the php mailer it is gr8
i would like to make an interface for it,
if im doing it for my site
how can i make a admin login and edit page
without actually having to edit the xml and load over and over again
if i have an interface where i just have to load the picture and like clik the upload button which will upload the photos and edit/update the xml file automatically or edit a particular page which has dynamic content

cud the members pls help me with this