The 1.00.04 patch. The only major change is a revision in how the weather is handled to prevent a cheat.
1. Compiled with latest DirectX 9.0c (Nov 2007) SDK. Requires November 2007 runtime or later. Run the updated dxwebsetup.exe file in the game folder to download it if you don't already have it installed.
2. Compiled with latest FMODex audio SDK.
3. Dynamic weather handling revised. NOTE: The weather cheat no longer works reliably because the dynamic weather system clamps the values of the weather to whatever values the current climate zone should have