You might try running 3danalyze. When I was trying to run AH2 with an onboard Prosavage vid set, I got that Zbuffer nonsupport message, but the real problem was no transform & lighting capability. I used 3danalyze to emulate T&L support and was able to get fps up into the low 30's on occasion. Better to shop around and spend $30-40 US for a semidecent vid card tho, or more for a better one.