auto logon

From: Jozer (sirjosi@hotmail.com)
Date: 05/27/02 

From: "Jozer" <sirjosi@hotmail.com>
Date: Mon, 27 May 2002 00:13:50 -0700

i tried to install vs.net on my w2k adv srv. the vs install failed but the
updates finished. so I now have the ,net framework administration tool
installed. I now find my machine doing an auto login using the admin
account.

I may or may not have brought this upon myself during .net installation.

question 1:
how did this happen?

question 2:
how do I stop it?

thanks!
Jose