Go to the HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Controlkey
If there is no key called StorageDevicePolicies, create it. You do this by right-clicking the HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control key, and selecting New > Key from the menu.
Select the StorageDevicePolicies key
From the menu select Edit > New > DWORD Value
Name the new value WriteProtect
Right-click the WriteProtect value and choose Modify
In the Value Data: box enter 1
Exit the registry editor, and restart your computer
Answer.im is one of useful FREE online service which works as a auto reply answering machine for your instant messenger like Yahoo messenger, Google Talk, MSN, AIM and ICQ.
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It works in the following way mentioned below
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3. Click Exit, to exit but your account will stay online, and respond to messages by your friends. This service will auto respond to all the messages by your friends and contacts list even if your computer is switched off.