Here is the description of the program :
"Capsa Professional is a portable network analyzer for real-time packet capturing, 24/7 network monitoring, advanced protocol analysis, in-depth packet decoding, and automatic expert diagnosis.
It offers full visibility to your local network which helps quickly identify and resolve network problems. It runs under Windows XP/ 2003/ Vista/ 7."
I'm not sure why I need this program, but commercial businesses might since it seems the program is aimed towards that crowd. I'm not too technical when it comes to network problems I tend to let the network experts handle that.
To get your free copy of the program head on over to here: http://www.giveawayoftheday.com/capsa-pro7/
You will need to look at the readme.txt file for the activation code.
You can only get this program today, the offer expires at 11:59 PST.