Get a less terrible computer.
You might as well just buy a whole new one because your video card might not be bottlenecking it.
Why don't you just give us your specs? we aren't wizards.
Well I will try. I don't alot about what is required but I will try:
Currently:
1) connection type. road runner standard or turbo
2) Windows type. Windows Vista Home Basic
3) Current graphics cards. I have no idea.
4) directx. 9.0
What I would like:
1) directx 10
2) NVIDIA physics 8.0
3) Road Runner lightning.
Oh and card slot, PCI I think.
Is this even FPS lag? Or are you just on a server with a high ping? You seem to know absolutely nothing so this is incredibly possible.
Every server I join lags. The turbine just lags less, I just can't go onto the battlefied, I have to stay in the vents. Also, even offline play lags for me...