Problems getting ZC to Run

Okay, I just downloaded ZC, and it looks interesting. I downloaded the "ZC for dummies" link from a topic linked to from the main page. By the way, I use Windows XP on a brand new computer. So anyway, I tried ZC and it didn't work well. Fine. So I set the compatibility to Windows 98/Me and tried the game. Good news: it runs. Bad news: it runs with a speed comparable to molasses trying to go uphill. I'm fiddling with the options: the Vsync command makes the game speed up, but it speeds up too much: it's unplayable in that state as well. Can anyone help me get this thing to run properly?