According too the Firaxis-CFC chat Conquests will be compatable with all versions of Civ3 and that the copy protection is the same for all versions of Conquest.
"<Chieftess> <kryszcztov> Will each local version be ***100%*** compatible with one another ?
<Firaxis_Jesse> they will have the same copy protection - which is a huge step in the right direction!
<Thunderfall> That's good Jesse. no more patch woes!
<Jeff_ATARI> Yes, we'd like to prevent that patch confusion from ever happening again.
<Thunderfall> <smcsoon>: Can I install an Australian purchased Conquests on a UK purchased Civ3?
<Gobi> I think all of the English version of Conquests should be compatible with any previous English Civ 3
<Gobi> And PTW is thrown in along with any existing Civ3 and PTW patches
<kryszcztov> Merepatra : i own Civ3 & PTW in French ; can't play US modded games, and US non-modded games are in both english & french ; will this be fixed ?
<Merepatra_BA> I know they were working on making all versions more comptible kryszcztov but I don't know if it will solve your problems or not...I only have an english version, and of course it isn't a "final" version with all the installer things anything
<Muchembled> @Merepatra : about kryszcztov's question, it is mainly due to units folder naming : names should have been an identifier rather than the name itself (since the name changes with the language)
<Merepatra_BA> I think the naming issues is something the modding community among the testers was looking at"
Cheers CS