The Windows Vista Guest account allows anyone to use your laptop. Even considering that the Guest account is highly limited, that's just enough for a data thief to get a foothold and start hacking away.

1

Choose Start→Control Panel, and open the Control Panel's User Account Control Panel icon.

You'll be faced with a slew of User Accounts options.

2

Choose Manage Another Account.

Click the Continue button if you’re visually assaulted by a User Account Control warning. If the screen says Guest account is off, then everything is fine and you're done.

3

Click the Guest Account image to select it.

This is where you can set the limitations of the Guest account, including deactivating it.

4

Choose Turn Off the Guest Account.

If you ever need to turn the Guest account back on, this is the place to do that as well.

5

Close the User Account window.

Your Windows Vista laptop is now that much safer.