[Umka]

System.Net.WebClient webClient;
System.String data;
System.Net.WebProxy proxy;
System.Net.NetworkCredential credential;
Str strData;
XMLDocument doc;
;
URL = "http://www.cbr.ru/scripts/XML_val.asp?d=0";
webClient = new System.Net.WebClient();
proxy = new System.Net.WebProxy('адрес прокси', порт);
credential = new System.Net.NetworkCredential("логин", "пароль");
proxy.set_Credentials(credential);
webClient.set_Proxy(proxy);
strData = webClient.DownloadString(URL);
webClient.Dispose();
doc = xmlDocument::newXml(strData);