Finally I got it figured out.. here is the sweet code for my own problem.
Side Note:(part I was missing before..) Before you do any thing you should have a FTP site. So, from the IIS (on the server) create a FTP site and point the root directory to the folder that you want to upload or download and manually change the username and password (mine: username: administrator, password: sweet123)  from the properties of the site if necessary. (steps are very simple u can easily understand once u start creating an FTP site). I assume that you have your FTP site ready. Now, let us say the url is ftp://10.2.1.111/Images/.
And dont forget to add System.Net and System.IO to your namespace. 
now from  your code. 
        string CompleteDPath = "";
            CompleteDPath = "ftp://10.2.1.111/Images/";
            string UName = "";
            string PWD = "";
            UName = "administrator";
            PWD = "sweet123";
            WebRequest reqObj = WebRequest.Create(CompleteDPath + fname);
            reqObj.Method = WebRequestMethods.Ftp.UploadFile;
            reqObj.Credentials = new NetworkCredential(UName, PWD);
            FileStream streamObj = System.IO.File.OpenRead(_FULLlocalpathofthefile + fname);
            byte[] buffer = new byte[streamObj.Length + 1];
            streamObj.Read(buffer, 0, buffer.Length);
            streamObj.Close();
            streamObj = null;
            reqObj.GetRequestStream().Write(buffer, 0, buffer.Length);
            reqObj = null;