Any modern day PC will work fine. You need any 386 or better PC (yes, it runs on prehistoric machines too!) with at least 16MB RAM, VGA graphics adapter and a mouse. That's it! Laptops are no problem either.
The game should run on any platform that presents some form of DOS compatibility. That includes ANY version of Windows (3.1, 95, 98, NT, 2000, ME, XP, etc). If you have a MAC or UNIX system, you could potentially also run the game in a DOS simulator. Not guaranteed, but worth a try (if you succeed in this, drop me a line). The game will also run on any DOS platform. Developent was done in DOS and Windows 95/98/NT/2000, so those operating systems are 100% guaranteed (providing you meet other requirements).
I've heard (very seldom) people complaining about the game not showing up correctly. This is due to a problem with the graphics card on your machine. The game requires your card to be 100% compatible with some specification (don't ask me what now!) and if your video card is not, it might lead to problems. No need to worry though, I can count the cases on my one hand, so you should be fine. Any other problems, just mail me and we'll sort it out.