xpath query

in .NET 1.1, I wish to do some xml searching/node searching using xpath and an xml string.

I have this xml here:

<caller><userid>{540C8042-A520-DC11-AE79-00132047A063}</userid><merchantid>{59344736-A520-DC11-AE79-00132047A063}</merchantid></caller>


how can I obtain the <userid> value (the GUID) from that given string?

So, you say that your info is in a string?

Code:

---

            XmlDocument xd = new XmlDocument();
            xd.LoadXml(xmlString);

            XmlNode nod = xd.SelectSingleNode("/caller/userid");
            MessageBox.Show(nod.InnerText);

---

thanks ill give that a bash