From the people who made RollerCoaster Tycoon..
Quote:
Q: What are the system requirements needed to play RollerCoaster Tycoon® 3?
A: In order to play RollerCoaster Tycoon® 3, you will need a PC running Windows®. (A version for the Apple/Mac computers is NOT planned at this time).
Minimum and recommended computer specifications are as follows:
Operating System: Windows® 98/Me/2000/XP (Windows® XP recommended)
Processor: Pentium® III 733 MHz or compatible (Pentium® 4 1.2 GHz or compatible recommended)
Memory: 128 MB RAM; 256 MB for XP (256 MB; 384 MB for XP recommended)
Hard Disk Space: 600 MB free CD-ROM Drive: 4X CD-ROM or faster (8X or faster recommended)
Video: Any ATI Radeon™ or GeForce™ 2 with 32MB or higher; or other video card with 32MB and hardware T&L (ATI Radeon™ 64 MB SDR or GeForce™ 2 Pro or other video card with 64 MB or more memory and hardware T&L recommended)*
Sound: Windows® 98/Me/2000/XP-compatible 16-bit sound card*
DirectX®: DirectX® version 9 (included) or higher
If you don't have those requirements, I'd be highly surprised. By chance though, do you have that?
As for updating graphics drivers, run Windows Update and see if that picks up anything. Look through everything, not just critical updates. If that doesn't work, find Device Manager (Under XP, right click on My Computer, properties, Device manager (I think), for Vista type "Device" into the Quick Search, and it'll be on the list.). Find you Display Adapter, and right click on the text, update driver. Should be an online search from there.