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Need pin connections and source of connectors for Sony 8GB Walkman MP3 player and Ipod

My girlfriend's Sony Walkman 8GB MP3 player is a Model NWZ-E430. It is difficult to find docking stations and accessories for Sony units in retail stores, and few options exist even online. I'd like to build a docking station with high-quality amp / speakers for her. I am an electronics and computer tech by trade, but this is my girlfriend's player. I don't own one, and have not experimented with them. I need to know the pinouts (connections out of the Walkman) to connect it to the docking station... polarity of power connections, speaker outputs, etc. I also need a source for the Sony connector to fit into the Walkman. Finally, I need to know what the pinouts are for an Ipod docking station, in case I find one that I want to buy and hack, so it will work for the Walkman. Not having an Ipod, I do not know if they are the same type of connector as the Sony, but I assume they are different.