Jan Tielens has published this tip
on how to show your MSN status into a Sharepoint site.
What you've to do is simply drag and drop a Content Editor web part on a
SharePoint site, open the tool pane and click the Source Editor button. In the
text entry window type following HTML:
My
presence information:
<span>
<img border="0" height="12"
width="12"
src="/_layouts/images/blank.gif"
onload="IMNRC('email@address.com')" id="IMID1" ShowOfflinePawn=1> Jan
Tielens
</span>
The result (the menu showed above
pops up when you hover over the image) is:

The magic happens in the IMNRC client-side Javascript function that's called
when the OnLoad event of the image is triggered.
This function can be found in the /_layouts/1033/owsbrows.js file.Make sure your put
span tags around image and the text, otherwise you'll end up with some
unexpected (but funny) behavior. Also remember that you need to generate a
unique id value for each presence information block.
Finally, if you don't want the offline image to show when the user isn't
online, you can omit the ShowOffLinePawn
tag.
Nice tip... thanks! 