XML and Tree component question

[BenB]

I am working on an online project management system and I would ideally like to use XML and the Tree component as it would simplify things imensly for me.

What I ideally want to do is to grab XML from my server bit by bit - getting the whole thing at one time would just be monsterous. The server side bit is working nicely - Flash queries the server and it returns all the children from a specified node.

I need to know how I can add these into an existing XML object in flash.

For example, I have this XML structure in flash:

<node label="projects">
  <node label="placeholder" isBranch="true" />
</node>

and this XML structure loaded in from the server:

<node label="project1">
  <node label="placeholder1" isBranch="true" />
</node>
<node label="project2">
  <node label="placeholder2" isBranch="true" />
</node>

What I want is to replace the first place holder with all of the second XML structure.

I hope this makes some kinda sense. This is my first foray into XML so I apologise for any glaring mistakes.

Any help would be greatly appreciated.

Ben.

[BenB]

Sorry, I forgot to mention this is using Flash MX 2004 Pro.

I know I can add child nodes to an existing structure using:

myXMLobject.appendChild(newKid);

but I would ideally like to add bigger chunks rather than individual children.