multi-threading C# .NET

I've got a socket connection and Its set up to loop. I start off by

Code:

new Thread(Processing).Start();

void Processing()
{
        try
            {
                lock (BigLock)
                {
                    OnConnect();
                }
                while (true)
                {

                lock (BigLock)
                {
                    foreach (Connection conn in connections)
                    {
                        conn.Writer.Flush();
                    }
                }

                string line = Reader.ReadLine();
                if (line == null)
                {
                    break;
                }
                lock (BigLock)
                {
                    ProcessLine(line);
                }
            }
            }
            catch (Exception)
            {
                MessageBox.Show("ERROR:");
                Form.ActiveForm.Dispose();
                Form.ActiveForm.Close();
            }

            finally
            {
                lock (BigLock)
                {
                    socket.Close();
                    OnDisconnect();
                }
            }
        }

The Server doesnt start untill I click Start on the Form but once I click it, it freezes the form and when I click on it it stops responding and screws up the server. How can I have a thread for the Form and a thread for the loop going at the same time?

 

Thanks anyway but after a few hours of goofing around with System.Threading I figured it out.

 

Threading can be quite fun and is quite a huge topic, I still have to figure out how the thread pools work in the application I work with at work (150-200 concurrent threads running at one time, WOW!)