string strUrl = "http://api.mVaayoo.com/mvaayooapi/MessageCompose?user=7avip7@gmail.com:interested&senderID=TEST SMS&receipientno=9132154732&msgtxt=This is a test from mVaayoo API&state=4";
WebRequest request = HttpWebRequest.Create(strUrl);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream s = (Stream)response.GetResponseStream();
StreamReader readStream = new StreamReader( s );
string dataString = readStream.ReadToEnd();
response.Close();
s.Close();
readStream.Close();