Right, well v1.0 of this project is now complete, so here is a finished high res render of the map (sorry it's too big to upload to imageshack (5mb) so not sure where to host it.
http://www.mediafire.com/imageview.p...tsww86&thumb=4

I'll add some download links to the first post for anyone who has Minecraft and wants to check it out in 3d