How do add cell numbers to my messenger who are not on my email list?

I am trying to add phone numbers to my messenger and the numbers I had were removed and I just don't understand this new system I don't understand how i even added numbers to begin with i just push buttons and hope for the best
How do add cell numbers to my messenger who are not on my email list?
Here is a link to a Yahoo Messenger Help Request Form. Make sure to go into a lot of detail if describing a problem or asking a question:


http://help.yahoo.com/l/us/yahoo/messeng...
name popular