Actually, here on this forum, are several "hacked" PC versions of the editor.. I don't know about the saved game editor.
In my case, I simply had to copy certain Civ III directories from my Mac to the PC in order for the hacked PC editor to run. You get a dialogue box that tells you it can't find anything, but as long as the art folder is in place, you should have no problems getting the editor to work without a PC version of Civ installed on your Virtual PC or your Windows machine (This is how I use the PC Editor on my kids' win98 machine. ) I just click ignore on the first dialogue box, and the editor loads. If you do not copy over the art folder and all of it's subfolders, you will get a dialogue box for every graphic the editor tries to read... a lot of ignore clicking, but this too will work for you, you just won't be able to edit the maps.