Originally posted by anesufreddy
What will I use to develop the rest of the application?....
There are serveral programming languges that you can use for this purpose.
Such as Java or PHP.
....And what will the other websites use to get the contnent from the xml document?
That is a completely relative term.It all depends on what exactly is you are going to do with your XML file.Typically if you want to use it as an RSS/XML feed,then the XML file must be conform to RSS standard(at least 0.91)
Do a google searcch for phrase
and you shall get 8,970,000 results...