Mine

                    process1.StartInfo.FileName = Settings.Default.process1;
                    process1.StartInfo.Verb = "process1";
                    process1.StartInfo.CreateNoWindow = true;
                    process1.StartInfo.UseShellExecute = false;
                    process1.StartInfo.RedirectStandardOutput = true;
                    process1.StartInfo.RedirectStandardError = true;
                    process1.Start();
                    process1.OutputDataReceived += new DataReceivedEventHandler(process1_OutputDataReceived);
                    process1.ErrorDataReceived += new DataReceivedEventHandler(process1_ErrorDataReceived);
                    process1.BeginErrorReadLine();
                    process1.BeginOutputReadLine();

                    process2.StartInfo.FileName = Settings.Default.process2;
                    process2.StartInfo.Verb = "process2";
                    process2.StartInfo.CreateNoWindow = true;
                    process2.StartInfo.UseShellExecute = false;
                    process2.StartInfo.RedirectStandardOutput = true;
                    process2.StartInfo.RedirectStandardError = true;
                    process2.Start();
                    process2.OutputDataReceived += new DataReceivedEventHandler(process2_OutputDataReceived);
                    process2.ErrorDataReceived += new DataReceivedEventHandler(process2_ErrorDataReceived);
                    process2.BeginErrorReadLine();
                    process2.BeginOutputReadLine();