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Alex if you get stuck for ideas a simple solution would be to load up the old site in a vm and save the wiki out to static html files. You can then at least serve up the static wiki.
In the future you could maybe install a new wiki system and let us manually port across the content from the static wiki. If we got one member per wiki page on board then it would be a quick job! Count me in, if you do that.
-Akima