Low Impact System Tray Application

Basically, I want the source of this program:
<a href="http://toolbar.google.com/gmail-helper/">Gmail Notifier</a>
I am recreating it, and just getting started, but I'm stuck already.
Here's my main:
[STAThread]
static void Main()
{
      Form1 mainForm = new Form1();                  
      Application.Run();
}
Here's my Form1 constructor:
public Form1()
{ }
Absolutely nothing has been done, but it's already using more memory than the Gmail Notifier. Four MB's more (Windows Task Manager says so). I opened Microsoft Spy++, clicked "Processes", and here's the specs.
Gmail Notifier: 10 threads
--Windows: All the threads but two show nothing. The other two:
----Number one: "" GoogleGmailNotifySysTray
----Number two: "MCI command handling window" #43
My Form: 3 threads
--No Windows
My question: Is there another way to have a program run in the system tray, without all the windows forms mess? I want this program to use very little resources. I am pretty sure that the Gmail Notifier is made with .NET, so, I know that there IS a way to do it using less resources. I don't need the windows forms at all: I plan to have the program read logins and passwords out of a local xml file, then login with those and if there's new mail, change the icon (just like Gmail Notifier). I am confidant that I know how to do that, so all I'm asking is the system tray question.
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How do I get an icon in the system tray without a System.Windows.Forms.Form and NotifyIcon?
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Thanks in advance,
-Chris