I would consider changing the stucture of the xml to use elements, anyway, whatever suites you.
this should get you started
XmlTextReader tr;
string path = "c:\test.xml";
tr = new XmlTextReader(path);
FileStream fs = new FileStream(path,FileMode.Open);
tr = new XmlTextReader (fs);
string temp="";
while (!tr.EOF)
{
//read here
}