It's not working for me either. I installed it, installed WinPCap, chose load WinPCap at boot, but the Snooper shows no packets, even when "Show All" is selected. It detects two network adapters, both named "Microsoft". I've tried sniffing with both with no results. The thing is, it correctly shows my local host address as the one it's sniffing from, so it should probably work. I tried unchecking "only scan this computer" but that didn't help either. I am running it as administrator.