requirement for 802.11b access from Narita Express trains

[itojun@iijlab.net]

	For those of you coming to Yokohama -

	As promised, there's 802.11b wireless Internet access (of course
	with IPv6) available from Narita Express train, from Narita airport
	to Yokohama station.

	Note, however, the following items are required to use it:
	- Get a ticket for Green car (first class) instead of economy class.
	- you have to visit http://www.nex.v6pc.jp/en/ for sort-of
	  authentiation/authorization.

itojun