Know of a Good Algorithm to arrange a Tree (Graph)?

Do you know of a good algorithm to arrange a graph? The JDK comes with a demo example of a graph relaxer but I was wondering if there were any others out there.
thanks in advance,
Anil

Here are some sites I have been directed to:
http://graphdrawing.org/
Graph Drawing: Algorithms for the Visualization of Graphs (Paperback)
by Ioannis G. Tollis, Giuseppe Di Battista, Peter Eades, Roberto Tamassia

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