Quote Originally Posted by Grog
Slightly off-topic, but how do you make replays?

Is it only an option in custom battle mode or can you make them from campaign games?

Cheers
At the end of a custom battle, there is a button on a Battle results screen that allows you to save a battle replay.

As the campaign battle replays are concerned, some people say that you can get the replays by copying the Medieval II Total War\temp\campaign_battle.rpy into the Replays folder.
But this method never worked for me...