I like this game a lot. I never played the original table top version, but my friends that have say that it's a pretty good conversion (as good as can be expected). If you are interested there is a great demo out with the single player tutorial and one of the levels from the single player campaign. It's worth the download just for the intro movie, which is magnificent.
http://www.gamershell.com/download_6943.shtml
There's the URL for the demo, on the Gamer's Hell website, which is a great site for free no need to sign up game demos, trailers, and patches.