Zackg is (was?) working on creating Cyrodill for MW. http://cyrodiil.deejaygamer.com/news.php (not sure if it's still being worked on)
That link is for Province: Cyrodiil, of which I am a part of again. If you go there and click on the forums tab you can visit our forums and signing up will allow you to watch our progress as we make it. "I" am not creating Cyrodiil, "we" are. An entire team effort. =-)
Our project aims at bringing Cyrodiil into TES III. We are building a world based on the lore outlined in the Pocket Guide to the Empire. Here's a screenshot of recent progress.
http://i274.photobucket.com/albums/jj265/zackgwin/ZackGs%20Cyrodiil/MGEScreenshot33-1.jpg
http://i274.photobucket.com/albums/jj265/zackgwin/ZackGs%20Cyrodiil/Untitled-20.jpg
http://i274.photobucket.com/albums/jj265/zackgwin/ZackGs%20Cyrodiil/Untitled-19.jpg
http://i274.photobucket.com/albums/jj265/zackgwin/ZackGs%20Cyrodiil/MGEScreenshot6-1.jpg