I just downloaded the demo a couple of days ago and have been playing it non-stop since then.  All I can say is that you need a MONSTER machine for this game....!!!

You can get the 36.3 MB demo from Interplay's FTP site HERE.

It's still a new game so untill I buy it, no tips or tricks but here are a few screeenshots for you...
Click on one of the pictures below to see a larger image.