Fair enough, my question was pretty vague. Does anyone know of any tutorials that teach more about IPX? I know nothing about it, so something that can teach me how addressing and network layout works as a start would be good. Bill has mentioned different protocols, so perhaps there is a layer system like TCP/IP? I have been doing a bit of google searching, so far nothing has popped out as an outstanding resource. I suppose I will have to talk to the originator of the system I wish to interface to, and see what IPX protocols he is using. Then I guess I can tailor my research further. In the meantime, any tutorials or information would be appreciated. Thanks! Josh -- A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams William Chops Westfield wrote: > Saying you want to implement "IPX" is a bit like saying you want to > implement "Internet"... It's a catch phrase that covers quite a few > protocols that do very different things. File sharing/etc is quite > different than the stream-mode protocols used for dialout servers, > and so on. It'd be pretty easy to have a PIC implement (for instance) > the IPX "Service advertisement" protocol (and cheat by sending data > disguised as a service name, or something like that), and a lot more > work to implement one of the higher level protocols. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics