Red Hat Linux 8 in Dell Machine

[curlybraces]

hi ,   i have a DELL Optiplex 760L intell pc. when i install the Red Hat Linux 8 for that i have some problems. it doesn't run the x window ( don't have compatible Video drivers)..............!!!!!!!!!!!!!!!!! it doen't take the ethernet card drivers .............!!!!!!   so how can i install Linux to this machine ? pls help me   thank u