Game (theme park world) wont install?

Are you installing from the original installation CD? If so, go to Computer and right-click on the drive you put the CD in and click Explore. Find Setup.exe and right-click on that and click Properties. Click on the Compatibility tab and Run this program in compatibility mode for Windows XP. Click OK. Then right-click on Setup.exe again and click Run as Administrator. Some people report that they have had to run setup.exe several times before a successful installation. If you manage to get it to install without a crash, the third link down that I have listed has information on how to patch the game. Good luck!