here's a tutorial on getting the data into a web based database
Tweet-a-Watt - Data collection
there they use a wireless method of connecting to the net
I'm going to use a wired method
Arduino Ethernet shield with micro SD connector - Assembled ID: 201 - $45.00 : Adafruit Industries, Unique & fun DIY electronics and kits
but the webcode should be pretty close.
The parts are sitting on my desk but I haven't had a chance to play with them lately.