So, I was wondering if there were any talented modellers out there who could possibly help me out?

Oh, and in case you haven't played Oblivion- which is pretty unlikely- this is what I mean: http://www.uesp.net/wiki/File:Oblivion_Gate_Closed.jpg
The only difference I'd want, is since it'd be 200 years old by this point, some moss growing on it would look pretty cool.
Although feel free to make it look a bit more like an intact one (but not quite as intact!) if you'd prefer: http://www.uesp.net/wiki/File:Oblivion_Gate.jpg
Thanks in advance!