The other question I see a lot in the logs is if Civilization 4 runs on the Intel GMA/GME chips (notably the 82855 chipsets).
Yes, it does. Well, frankly, since Patch version 1.09 it does (my configuration). It works perfectly fine actually: the extra animations (which require hardware T&L strangely enough) are nice but not really necessary.
For other Civ 4 related stuff, check out all postings in the category dedicated to this game.