Need to run a c# dll from the command line

I have a c# dll defined like this:

namespace SMSNotificationDll
{
    public class smsSender
    {
        public void SendMessage(String number, String message)
        {
            ProcessStartInfo info = new ProcessStartInfo();
            info.FileName = "c:\\Program Files\\Java\\jdk1.6.0_24\\bin\\java";
            info.WorkingDirectory = "c:\\";
            info.Arguments = "-jar SendSms.jar "+number + " "+message;
            info.UseShellExecute = false;
            Process.Start(info);
        }
    }
}

and i need to execute it from the commandline.

Is there any way I can run it through rundll32?

When I run it with this :

rundll32 SMSNotificationDll.dll, SendMessage 0749965244 hello

I get missing entry: SendMessage.