How to stop automatically-coming up "Windows Live Messanger window"

I would like to know "how to stop automatically-coming up Windows Live Massanger window".

When I turn on my PC, Windows Live Massanger window comes up automatically.

So, I always need to close the window, before starting to use my PC.

It is annoying for me.

I would like to use Windows Live Massanger from the hotmail website.

If someone know how to solve this problem, please teach me.

Thank you very much for your time.

groovysnake　

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