Hi all... I'm looking at getting the 1.29f patch for vanilla Civ3... what is a mirror? Does it matter what mirror I pick? Wat are the differences between different mirrors for the same patch?

A mirror is simply another place that has the same file. It might d/l faster for you...depends if you get a better 'ping' (time it takes for the two of you to 'talk') and if the load on that server is lower.