Do this to see what you need to upgrade to run HGL or if your computer should work with it:
http://www.nzone.com/content/nzone/srl/nzone_srl.asp?gameid=5451It's safe, it's on the HGL website.
As for video settings go, I had mine all on high on DX9. It looked like shit compared to when I put
everything on low or off.
When it was on high, everything had nasty colors and there was a big brown light haze over the whole screen.
When I turned it all to low or off, it looked better, and my FPS went up about 60.
~Kinky.