Just downloaded the demo (why didn't you give a link to the site? ) and I'm about to give it a go.
(ed. Never mind. He did actually give the link. It's at the bottom of the list.)
Beware... the system requirements are pretty stiff.
Windows minimum Requirements:
? Pentium or AMD Athlon 500 MHz
? 64 MB RAM
? Windows 98 and above
? 30 MB HDD
? DirectX compatible 3D accelerator w/ 32 MB RAM
? 8X CD ROM
? Windows Compatible Sound Card
? Open GL 1.1 or greater