I have finally got the MEGA8515 talking to a ne2000 network card. It only supports UDP but it's enough for me at the moment.

The schematic (I've not included the LEDs)

A picture of the board (this is only a prototype is see if it was possible)

And Here is the web page with the java code that talks to the CPU.
You won't see much in the browser, but at my end LED's will blick, if anyone knows how to get the UDP receive function working within a browser please let me know :)

And Here's the web page that throws a security exception when I try to receive data