I was playing the game Saga that I downloaded and thought it looked pretty cool but it makes my computer crash. Any good games you know of for XP or Vista?
I have also tried Empire Earth and Age of Empires, but those are more Real-Time Strategy (RTS) as opposed to Civ's turn-based system.
The SimCity series is more city building with almost no military involved.
I have read of one game which I think its name is Civ: Rome and in is also an RTS. That incompasses city buildind and war in one complete package. This would probably be your best choice along with Civilization.