Shoutbox

Hi everyone, can someone help??? before i start, im quite new to computers and although i have used windows messenger before, i thought the idea of being able to use 2 messengers, via PLUS would be fantastic. I recently bought this computer which had windows live essentials 2011. I attemted to download Messenger Plus and thought i had succeeded, however when opening messenger, there was no PLUS. I have uninstalled several times (both WLM and PLUS) however this still nothing. I have noticed in control panel>messenger PLUS has a red cross over it and an exclamation mark? I gather this means it is not installed. Can anyone assist me?