Keep in mind the settings for 3dmark, higher resolution or any other aa settings will severely cripple the score. The "common" benchmarks are based on default settings.
Also yes, make sure you get the most recent drivers for your motherboard and video card.
If none of those help, try another benchmark, like 3dmark 05 or 03 see if you get the same results.
Usually grahpics have issues other then just slow performance if there is somethign wrong with the card itself. Like display corruption or system instability while playing games.