simple xml editor

Hello.

I'd like to develop a simple xml editor based on netbeans
platform for a particular xml schema, something like the ide
has for the web.xml file.. Just the explorer, the navigator,
the editor and the output window.

I have to say that even though I've been using netbeans
since early 2001 for java development, I'm a beginner
with module development.

I just started working on the module with netbeans ide 5.0
(but tomorrow I'll upgrade to 5.5) and using the wizard,
have already made a new file type for my xml namespace.

Launching the new application, I see that my xml files
are recognized, as the icon I set for this file type is shown.

The first problem is that the new fileType seams to not have
inherited all the functionalities used for xml files.

1) the well formed and validate buttons in the editor are disabled.
2) the navigator doesn't show anything

But the editor still uses highlighting and colors..

Of course, when editing an xml file that doesn't use an xml schema
the well formed and validate buttons are again enabled and the
navigator again shows its content.

How can I add all features present for plain xml files to
my file type?

I also would appreciate any hints and directions you could
give me on how to implement the editor (wizards, apis,
files to edit, etc..)

Best regards.

--
Roberto