How to get theme hospital to work

Hello,

I love theme hospital. Am using windows xp now. but i cant seem to get the game running and i dont know what is wrong. is it i must download some flash player or something?

I download the game from some link. after download i got a zip folder. Once i click open, thereis setup, play & many other folders. however for the setup play folder there is no picture as icon.

When i click on the play icon, the ms-dos popped out says theme hospital v3 then pops back out.

How do i solve this?

Thanks