has anyone used any of the these connections on the back of the pioneer BD-V1100 digital cable box from time warner. these connections: - ethernet connection,no idea. - serial port connection,says its for vcr recording? - usb connector,says for keyboard,what for? here's the time warner site http://twceastnc.tv/box.html any ideas? i'm using the s-video,and digital audio outputs only for now.