Resolved Remove Windows Live Messenger

HI All, .................. Can any tell me how to remove this annoying popup which occurs each time I start Windows 7. It asks me to sign in and for a password. I'm not interested in this offering. A seach of this forum shows only one post about this offering causing a crash and this is from January of 2009. I'm surprised more are not afflicted with Microsoft's unwanted program.

So far -- following other's advice -- I have supplied a second administrator which didn't help. I have removed the file so that now a search cannot find it but the popup screen if still there on startup. Any help, please.

 

Evan Omo, .................. You're a wonderful person. Your suggestion worked beautifully. After using Zap Messenger, I shut down the computer, then restarted, no Windows Live. Thank you for the excellent help.