FileChooser

I'm new with Swixml and I'd like to know if Swixml covers entirely whole
swing.
For example I have a swing Gui which uses classes like FileChooser and
FileFilter.
How can I have these kinds of classes with swixml?
Do I have to create my tag?

Do anyone else have problems running the swixml demo sample called "new
tag"?
I've the following error: "Resource could not be found xml/XPanel.xml".
Is it possible that the downloaded package misses such a file?

Thanks,
Sara.