As promised here is the first alpha version of Gauge, an application that monitors your computer, waits until you play CounterStrike: Source and when you do, publishes the server information (server ip, port, map name) to MSN 7, using the "What I'm listening to" feature.
This is a test only version, so don't expect much.
I'm open to suggestions, feel free to send feedback using the comments or email me at the address specified in the readme.txt file.
Download
PS: it connects to a webservice on stup.org, don't worry its just that Valve releases a new version of CSS every now and then, and I need to update certain variables to keep it working.
EDIT: it looks like the method I use to get the server from the memory is not reliable as the address is dependant on the machine on which the software runs. I'll try to look into it when I have some free time ... The download is now inactive.