I didn't see the price for the enc28j60 module that started the post. I've done a tutorial about using a similar device which cost me about $25 (GBP14.35 inc postage from UK to UK).
The tutorial creates a webserver which presents a page with two buttons: "LED On", "LED off". The control an LED on the Arduino. The page also reports the reading from a light sensor which the LED shines upon.http://sheepdogguides.com/arduino/art5serv.htm
For the next two hours or so it may not be continually up, as I am doing some work on improving the software, but it will be mostly up.