I'm pretty sure you're talking about the first G.I. Joe Warfare. Unfortunately, it may be lost for good. Mike, the creator lost his files in a computer mishap and his webhost went down as well.
There were rumors that he still had the files somewhere, and I tried in vain to get them from him and posted on my site. We just kind of lost touch.
I'm pretty sure that's the one you're talking about. Part II is listed on this site, but Part I, I fear, is forever lost in the Internet history books.
Justin