nested set tree model help

may some people have noticed that i commited some methods which work on the nested set tree thingy, in the Tree-classes now i was wondering if someone could help me on some issues (Tomas???) the problems i have are actually just forming some queries for - getChildren, to get all direct children of a node - getParent, getting the parent of a node i didnt find anything on the web :-( as you might have seen, some methods are already implemented examples for those that work exist in the directory examples i would really appreciate some help just the queries would be enough -- Wolfram ... translating template system ... http://sourceforge.net/projects/simpletpl