TCP/IP on a PIC

I was looking into embedded TCP/IP stacks today for the PIC. I found this, which seems to be quite cool:

http://www.kyllikki.org/hardware/wwwpic2/

I was looking at the schematic. Would it be vaguely easy to connect the PIC18 in the EDU-RC to some contrivance similar to this, or is that too much effort? I want to use the included code, or something like it, and I have zero talent at PIC assembly. :]

This code is written for a PIC 16F, while the chip inside the IFI controller is an 18F, so it would not work without modification.