Wander by Packetyzer Packet Analyzer and get their custom version of Ethereal at
www.networkchemistry.com/products/packetyzer/#download
They had partnered with EtherPeek and they have a frontend that looks alot like EtherPeek on top of Ethereal . The install includes Winpcap 2.3. But, I found with a clean install on XP, you need to run the install and then run the winpcap 3.0 install over it for it work properly. But, it's still FREE
We also have the link for this and others on our
Network Analysis Tools page.
Packetattack