kobe4mvp01, you also might want to check your video card driver settings, make sure anti-aliasing(AA) is off, you can also turn off anisotropic filtering(AF) as nba live doesn't really need that. You can also play at a lower resolution to improve performance.
You could turn the bench players to low or off, since the bench doesn't do shit but sit still like catatonics. If you play with reflections on low or medium you shouldn't notice much of a difference after a while, and you will get some extra performance out of it, rather than playing on high.
Texture filter should be on bilinear, you shouldn't notice a difference in image quality, and you may get an extra frame here or there. If you do notice worse image quality, put it at trilinear. Anisotropic is the highest setting but the level of anisotropic filtering in your gfx card D3D settings will determine how much it lowers your framerate.
Here's a thread at the guru3d forums where someone asks what the best driver is for the fx 5500 pci, they go through a few drivers and post the benchmark results -
http://forums.guru3d.com/showthread.php?t=166693
You can also try "modified" drivers, which attempt to increase performance and image quality in games.
Omega Nvidia Drivers
Modded Nvidia Video Card Drivers at guru3d.com
Official Nvidia Drivers