first create a new folder somewhere on your hard drive
when you name it hold down "Alt” and press "0160″ this will create and invisible space so it will apper as if it has no name.
then right click in and select "Properties” select the tab "coustimize” and select "change icon” scroll
along and you should a few blanc spaces click on any one and click ok
when you hav saved the settings the folder will be invisible to hide
all your personal files
Once you have created regular user accounts, the default Administrator
account vanishes from the Welcome screen, which you see when the
computer starts up. Press Ctrl-Alt-Delete twice at
the Welcome screen to retrieve the standard logon dialog. You can log
on as Administrator from here. To switch among accounts, just click the
Log Off button on the Start menu. You’ll then see the Log Off Windows
dialog box. Click the Switch User button, and you’ll be taken to the
Welcome screen where you can select and log on to other accounts.