Extracting the original files

Requirements
You are familiar with the game layout.

The process
At moment, there are no official tools to do this, so we are going to rely on home-made tools. The tools that allow you to extract the BIF files can be found in this article: KEY BIF V1.1 Format. Get one of these tools and start it. It does not matter which tool you use, you will have to select at least one KEY file that you want to extract. Some tools allow be more specific (like UnBIF allows extracting specific BIF files), but at the end you will have to hit an extract button. Make sure that you extract all files outside of the game directories and they may interfere with the game itself. The time needed to extract the data depends on the speed of your machine and the amount of data to be extracted. I took me a little over 7 minutes to extract all data from the game - so don't be surprised.