There are multiple sources for the converter that Raj is talking about. Unfortunatley they all tend to be somewhat expensive. Here is a link to one at B&B Electronics that lists for about $150 US.

A far better solution to this is to embed the Ethernet directly in the product. If you search the internet you can find a number of places to gather information about that. Here are two links to start with:

http://www.circuitcellar.com/library/p...0brady.pdf

http://www.mcselec.com/easy_tcp_ip.htm

MICHAEL KARAS