How to turn off or turn on Guest Account in Windows Vista?

Please refer to the following contents
  

About the general knowledge of Guest Account, please refer to the following contents.
[Windows Vista] About  Guest Account

About how to turn off or turn on Guest Account, please refer to the following steps.
■ How to turn off Guest Account
■ How to turn on using Guest Account
 

■How to turn off Guest Account
1.Click the Start button, and then click Control Panel.

2.Click Add or remove  user accounts in User Accounts item.

3.After displaying the User Account Control message, and then clicking the Continue button.
For a standard user, please refer to the following steps.
Windows Vista]About  User Account Control
4.If not displaying the User Account Control message, please refer to the following steps.
5.Click Guest.

6.Click Turn off the guest account.

7.Guest Account has turned off.
 

■How to turn on  Guest Account
 
1.Click the Start button, and then click Control Panel.
2.Click Add or remove User account in User Accounts item.

3.After displaying the Use Account Control message, click the Continue button.
For a standard user, please read the following solution for your reference.
Windows Vista About User Account
4.If not displaying the User Account Control message, please refer to the following steps.
5.Click Guest.

6.After showing Do you want to turn on the guest account?, click Turn On button.

7.Guest Account turns on