VC 读取XML文件并显示出来，树状结构？

现在又下列的文件：
XML code:

<?xml version="1.0" ?>
<PMP>
<Setup>
<System>
<USBMode value="0" />
<LCDTV value="0" />
<TVMode value="2" />
<DefaultSetting value="0" />
<SlideShowTime value="0" />
<MaxPreviewedFile value="0" />
<Volume value="30" />
<KeyboardSound value="1" />
<LCDBacklight value="7" />
<ClockType value="0" />
</System>
<Power>
<PowerOff value="0" />
<LCDOff value="0" />
</Power>
<Battery>
<LCDOff value="0" />
<PowerOff value="0" />
</Battery>
<MosaicSize>
<VideoMosaicSize value="7" />
<PhotoMosaicSize value="4" />
</MosaicSize>
<ScreenSaver>
<ScreenSaver value="0" />
<SaverChoice value="1" />
</ScreenSaver>
</Setup>
</PMP>