Developer Web Site

Hello, I'm using ASP.NET 3.5 and I'm trying to parse the XML response from the contacts list. Here's my code:

Uri address = new Uri(CCURL_Contacts + "?email=xxxxx%40xxxxxx.com");
HttpWebRequest request = WebRequest.Create(address) as HttpWebRequest;
request.Credentials = new NetworkCredential(CCAPIKey + "%" + CCLoginName, CCLoginPassword);
request.Method = "GET";
request.ContentType = "application/atom+xml";

//Get the data as an HttpWebResponse object
HttpWebResponse HttpWResp = (HttpWebResponse)request.GetResponse();

//Convert the data into a string
StreamReader reader = new StreamReader(HttpWResp.GetResponseStream());
String results = reader.ReadToEnd();
reader.Close();

// Handle the XML data
XmlDocument doc = new XmlDocument();
doc.LoadXml(results);

XmlNode root = doc.DocumentElement;
XmlNode detail;

// ******* No matter what I put for the Xpath string parameter, the following always results in detail = null
detail = root.SelectSingleNode("/entry/id");
**********************************

// The following works but is limiting.
XmlNodeList nodes = doc.GetElementsByTagName("id");
detail = nodes.Item(1);

I can't seem to get SelectSingleNode to work, although it would tremendously facilitate further coding. I've read about namespaces but I don't understand it enough to know if that's where the issue is and I can't figure out how to use namespaces in conjunction with the response XML data and Xpaths. And maybe that's the wrong tree to bark up at.

Can anyone offer any solution so that I may use SelectSingleNode? I've looked all around the forums and documentation and I can't find much there.

Thanks in advance.