This game is played with the DOS version of the original Civilization. I have upgraded my own game to the most recent version (v.5). The patch is available on the Civ1 section of this site.
Personally, I have no problem running the game under Windows XP with the exception of the sound setting. The game is intolerably slow with any sound setting except "IBM sounds" (even with "no sound"). Well, it only adds to the nostalgia.
Civ1 games are saved in two files, an sve- and a map-file. You cannot choose the filename. Apart from the slots for automatic saves every 50 turns, there are only four slots for manual saves. These are named civil0, civil1, etc. In order to avoid confusion I suggest to zip the two files to be posted and to rename the zip file so that it shows the year of the save.
I have no idea how to make screenshots under Civ1. If there's an easy way, I'd be keen to learn it. In many cases, a screenshot can tell more than the best turnlog.