string url = "http://login.vk.com/?act=login&q=1&al_frame=1&expire=&captcha_sid=&captcha_key=&from_host=vk.com&email=" + login.Text + "&pass=" + pass.Text; HttpWebRequest Req = (HttpWebRequest)System.Net.WebRequest.Create(url); Req.UserAgent = "Chrome/13.0"; Req.Method = "POST"; Req.Timeout = 100000; Regex sidreg = new Regex("sid=([a-z0-9]+); exp"); Match sidx = sidreg.Match(Req.GetResponse().Headers.ToString()); remixsid = sidx.Groups[1].Value; cook = new Cookie("remixsid", remixsid); cook.Domain = "vk.com";