crossfire doesnt open

hey i already played crossfire long time ago and i wanna come back.
so i downloaded it all worked.
i start it everything open xtrax and hgw.
hgw load 100% it close then nothing O.o
is it because my pc is not enough good to run it?
the video card say
GeForce 5600

but i have Intel(R) 82945G Express Chipset Family (128 Mo)
is it good? idk which one is better
but i already played so.

well please help