I run a P500 128 ram and a Voodoo5.
I have aliasing off, but im pretty sure the card is very capable of it, i run it 'ok' in a game like Everquest where frame rate isnt even talked about

and game is meant for eye candy and the graphics are sweet as you like.
I run 1024x768 and dont like to go lower or higher. Any lower and the resolution can affect your aim etc, and any higher drains on my p500 which is what you have lepaul, but you got more ram maybe yours will have enough for Aliasing, but the fps will go very low in smoke.
Aliasing also does have 1 good aspect, the screenshots
