Windows live messenger isn't working?

I can log into msn messenger and it shows that I am available on my screen but noone is able to see me as online and I can't talk with anyone. I have uninstalled and reinstalled it and everytime it shows the same thing. I can't figure it out and don't know of anything else to do. Any help is greatly appreciated.
Jenny, March 2011


done
is there a setting in windows live, that makes you invisbile to others? like on the gmail chat?or have you invited them to chat with you by email from windows live? if not they might not see you or you see them on line when their on,,,

m, March 2011