Creating tree using table?

Hi all, Currently, i'm trying to write a program which is related to tree manipulation. Meaning that, i'll search the tree to get level or count how many child exist for particular parent, for example. Initially i planned to use table to represent all kind of datas that are parent, left child and right child. However, i still face problem in calculating the level of the tree. So, can any one gives me an idea on how to manipulate the table so that i will be able to count the level? Your prompt reply is much appreciated. Thanks.... E K _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.