On another note - when I was 14 my computer made a nice doorstop so I don't think you're doing too badly Now I'm 18 and got a fairly nice PC. (4600, 8800gts and 2GB ram) Things can only get better
Before you slam a 14 year old who demonstrated greater knowledge than you did in his original post, kindly know what you're talking about.
Updating your video card drivers is probably a good option too.
The game was designed to run on both DX9 and DX10 but the primary was DX9,DX10 effects are there only for those who have DX10 cards so dont worry it will run on both
Maybe you should update your graphics card Driver on ver. 163.44 first then run the game by clicking at Start > Games > Right Click Bioshock > Play - DirectX9
If that doesnt work. I no clue why.
I agree 100%...with you...Ive only got an AMD Athlon XP 1800=1.53,overclocked to 1.63,nvidia 6800 GT card.driver 162.18,creative X-fi X-treme gamer.driver 101.18,2 gig memory,DX9,Windows XP pro,settings in game for video card = med,sound card = max.......I hope this helps.....Definitely uninstall drivers Before installing new......