Looking at the forums where someone else wanted to know the same thing but the answer was never found I decided to ask the question again myself. If anyone is also interested in trying message me, I'll be using Hamachi for LAN play.

Did anyone ever get back to you on this?

i'm in the process of trying it at the moment over LAN so I'll let you know.

So far I've found that version 1.0 of the game has TCP/IP but errors out when you try and host a game ('end of line' error or something) and IPX is not supported by my OS (Win7 64bit).

Version 1.2 has the IPX protocol but also has a blank one underneath that takes you to a COM port setup. I have no COM ports on either of my PCs so I'll have a look at either virtually creating one from the USB (if this is even possible!) or buying an adapter.

Modem status 'unable to open the line' is the error.

I'm going to try IPXWrapper

I managed to launch multiplayer using Tunngle and its working!

It's a great thing I decided to check back on this today. I'm definitely keeping this in mind!