your card is capable of all of the optional settings, but what exactly do you need to know?
i only ask because there's like a billion options, and i don't wanna be writing a post for like ever
simple things though is
Glow = Light/Sun/Fire Glows, adds atmosphere but is DEADLY slow
Field of Depth = Background blur, suppose to give you the sense of depth however in AoD actually looks more like Resident Evils prerendered background - still a cool effect
RT Effects = Real Time Effects, Reflection & Refection for glass, water and metal
Shadows = Well erm Shadows
Fog = again doesn't take a rocket scientist
Heat Wave = this is an awesome thing that makes heat sources shimmer, very awesome but also very costly speedwise
Vertex Shader = Faster Vertex Animation, however the FX5200 it doesn't make much of speed difference when you have multiple people onscreen. With your CPU infact i'd suggest softwate VS.
Well you get the idea ...
if there is anything particular you need explaining then I will in more detail and perhaps with a screenshot when i get AoD reinstalled (my CDROM killed one of the CDs, only just got a new one)
To Survive You Must Evolve... This Time Van Will Not Escape His Fate!