ONI

i need help !! hi guys, i have Strike fighters Project one and SF2 sims, but both have problems... SF1 then i end a mission, the game close without error or anything (renders correctly) SF2 ground rendering problems (the terrain disapears or renders over the aircraft, hiding it (i dont have crash or anything, only render problems) my computer is a lenovo thinkcentre m70e WIN 7 sp1 4gb Ram 3.2ghz Intel 5800 processor Intel g41 express chipset (i know, its a crap) what can i do for repair at least one of this sims ?

in this computer i have always this problem, in my older computer works perfectly both sims, but its obsolete to use it... i have update drivers, net framework, directx, both SF (1 AND 2) with the latest update, i tried with compatibility mode, nothing ! i dont know what i can do, i have seen that should be the ground shaders, that can be disabled, but i dont know with specific file is

SF2 viethnam, original desert map