Replying to ****Help with freak out demo!!!

Ok so I downloaded the demo, installed it and came up with my first problem: it said "d3dx9_30.dll is not found blah blah blah". i downloaded some thing and fixed it. then the game starts, runs pretty good, but you can only see the skiers hat and skis, no body. then when you actually start playing, there is white flashes, a little stick figure in the background doing exactly what my skier is, and the skier doesn't have a body. this makes the game impossible to play. I tried downloading a program which makes your video card work better (it said to do that on the website), and it didn't do much.

I really want this to work, so you guys should help out.
And its posted here, not on the games forums, because the games forums are DEAD