This is an official patch for RollerCoaster Tycoon 2 which resolves a problem with the SecuROM copy protection system.
This patch specifically addresses issues users may be having with the SecuRom copy protection included with the game. If the game fails to run after being installed, particularly immediately after the cursor on-screen briefly turns into an animated CDROM, this patch may address that issue.
Note that this patch addresses NO other gameplay issues. If you are able to launch the game now, you do not need this update.
Using your favorite .ZIP program, unzip the RCT2.EXE file into the folder you installed Roller Coaster Tycoon 2 to. By default, this is C:\Program Files\Infogrames Interactive\RollerCoaster Tycoon 2. If you installed into a different folder, be sure to extract to that folder, or extract into a temporary folder and copy the files into that folder.