Creating An Internet Relay Chat (IRC) Server

I have recently opened up a game, in which is slowly becoming pretty active. However, I want the ability to create an IRC server - locally. We are currently only on shared hosting, because we don't have a lot of bandwidth usage yet - however I believe it would be successfull to start an IRC server now, plus it would be nice to know how to do it.

However, I have two questions/problems: I am not interested in having another computer run the IRC server, because I don't have a stable internet connection except at home in which Im not willing to have to drive from campus to home if something were to happen. Therefore, I'd like to be able to run it off a PC I have ideling inside my dorm. The problem is, my roommate uses it a lot while I use my laptop, and therefore it needs to run off Windows, or somehow give me the ability to run it off a linux while running Windows - or something silly like that.

Therefore, I have two possibilities. Either one, this is completely not possible or two there is some sort of emulator or something like in which I can run IRC on Windows - Or the ability to create an IRC server directly onto windows.

Any ideas? If it is the second possibility, please provide some good tutorials or software into creating a basic IRC server. I don't really care about security unless it is going to affect the connection/box. It's not like we have a bunch of hackers who are going to attemp to exploit it, because when we launch out of BETA we will buy a server, in which we will have IRC installed onto it.