How to drow a chart

Hello to everybody!

I need to draw a chart similar to a flow chart, starting from a structured xml file containing the informations I have to draw. It whould be great (but it also can be a successive target) if it was possible to modify the chart and the modifications go back to the xml. An example of the result I'd need:

Xml file:

<chart>

<node1>

    <node2/>

</node1>

<node3>

    <node4/>

    <node5/>

</node3>

</chart>

Result:

-----------                                   -----------

| node1  | --------------------------| node3  |

-----------                                   -----------

  |                                                 |

  |   -----------                                |   ----------

  |_ | node2  |                                |_| node4  |

      -----------                                |   ----------

                                                    |

                                                    |  ----------

                                                    |_ | node5  |

                                                       -----------

I also need to write some infotmations on each node.

Does exist some graphical library in .net or eventually outside the .net framework that can help me in drowing this chart? What is the best approach to aim this target?

Thanks in advance,

Paolo

Paolo