This little project provides a PIC micro controller PIC16F887 with an ethernet interface ENC28J60. The ENC28J60 is available as a DIL chip. The corresponding firmware is written in assembler and fits into as little as 2K of code. If you do not like C then have a look at this. Communication to a PC is implemented using simple UDP telegrams of 32 Bytes in size. The software on the PC side is written in C# using Visual Studio (R) Express 2010.