I developed an application that counts how long a user remains
logged-in. The application should be launched when the Windows
boots up and it should run in the background (the application
should not show up in the Task Bar or System Tray).

I used Registry Editor to add my app to the Windows Registry
(HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run).
This method successfully launches my application when the computer
boots up, however it is not running in the background (i.e the user
can see my application in the System Tray).
I am using Windows XP O/S.

How can I prevent the user from seeing my application.
It is even better if anyone could provide a manually adding method.

Advance Thanks.

I don't think there's anything the installer can do to achieve this, so you might get better results in another forum.

But wouldn't it be sufficient if your application didn't create a window?

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Thank you!