Alas, the NetConnection tool is not part of the Flex 2
release. The NetConnection tool that comes with Flex 1.5 would not
be able to decode the AS3 AMF packets anyway.
The tool isn't part of Flex 2 because of the wide range of
tools on the market (some good ones are free I'm told). Check
around the net. I hear that one called "Charles" is capable of
looking at the packets.