do you mean this ?
To turn the Welcome screen on or off. You must have a computer administrator account to turn the
Use the Welcome screen feature on or off.
Open User Accounts in Control Panel. Click Change the way users log on or off.
Do one of the following:
To specify that users log on to the computer using the Welcome screen, select the Use the Welcome screen check box.
A user logs on to the computer by clicking his or her user account name on the Welcome screen.
If a password is assigned to the account, the user is prompted to type it.
To specify that users log on to the computer without using the Welcome screen, clear the Use the Welcome screen check box.
The Welcome screen will no longer appear when you start the computer. To log on to the computer, type your user name (and password, if you have one) in the standard Log On to Windows dialog box.