You Can login with Id’s on the same Yahoo Messenger
Go To Start > Run > Type regedit, Hit Enter
Go To HKEY_CURRENT_USER > Software > Yahoo > Pager > Test
World Internet world is very different with the real world. All the people in this world can be assembled with ease in this forum and community forums in the world of chat.
When not busy sometimes we need someone to talk to, even if his busy situations we sometimes even taking the time to chat with friends around us or even friends outside around us. suppose in this case is chatting with friends on Yahoo! Messenger.
How to make People that is not on your Friend’s list not be able to sent you PM? Because you are very carefully with friendship, in case on internet, you must need more privacy then in real life ( unless if you are more preferring virtual world then real world 
).
How To make Your Friends can’t sent Personal Message? Sometime you must had been in a bad humour with your friend or with your new friend on Yahoo! messenger, because i had been to. Casually it happend if your friend sent you unpalatable PM over and over again, so i will ignore my friend’s ID at a set time …..
How to change Avatar (our picture)? Do you want set your personal picture on Yahoo Messenger? … so your friends can recognise you maybe you want to put other picture, whatever it is…it can be signify yourself.
At first that you should do is choosing picture that you want. Yahoo! Messenger only kept a place for quadrangle picture, so you better pick with quandrangle size.
How to make Status at Yahoo! Messenger?, Sometime you want to make status such:
How to make our Yahoo! Messenger ID on Invisible When you were bussy or uninterruptable even when you need more privacy, and we don’t want all our frinds on Yahoo! messenger list know that we online since we get started login on Yahoo! Messenger.
Sometimes when we use internet notably Yahoo! Messenger we don’t want our privacy interfere with other people, there is one trick,although we still online but our friends in Yahoo! Messenger couldn’t see that we are online ( invisible ). We can choose one or more people even a group to not see are we online or not at Yahoo! Messenger, we can using STEALTH in Yahoo! Messenger facility.
