Have you seen this yet?

The Windows Live™ Messenger IM Control lets people on the Web reach you in Messenger by showing your Messenger status on your web site, blog, or social networking profile.

The IM Control runs in the browser and lets site visitors message you without installing Messenger first.

It is supported in IE6, IE7, and FireFox 2.0 on Windows and FireFox 2.0 on Mac OS and supports 32 languages.

I am going to leave this on my blog for few days, ping me and say hello!

Setup Here