Some of it is available using the WayBack Machine (Internet Archive) which stores webpages off of the internet.
http://web.archive.org/web/201011101...wiki/Main_Page
(wait for it to load from the archive)
If you do manage to retrieve a useful page, please consider taking the time to put that data on the other Dom3 wiki
http://dominions3.wikia.com/wiki/Dominions_3_Wiki