.bat file can not execute on windows server 2003

Hello,
             i want to execute the batch file on server but the problem is that it can not execute.even it is not giving any error. what should i do?
this is my code.even i simply call the notepad.exe it is also not execute.

 try
            {
                ProcessStartInfo info = new ProcessStartInfo(AppPath + @"bin\execute.bat");
                info.UseShellExecute = false;
                info.RedirectStandardInput = true;
                info.RedirectStandardError = true;
    & ...