[Zope] folders, parent folders, child folders

Hi, What I would like to do is start with one folder in a hierarchy of folders and walk through and find all the parent, sibling and child folders. I'll probably use something like an array to represent them. The problem is how do I find these parent and child folders? I've looked through the API information in Appendix B of the online Zope Book, but none of the modules seems to cover this. Of course i'm a total newbie, so I'm hoping somebody can point me in the right direction? Many Thanks, Rita Mikusch __________________________________________________ Yahoo! - We Remember 9-11: A tribute to the more than 3,000 lives lost http://dir.remember.yahoo.com/tribute