Well I just dloaded and ran it, got 65k+ .. i have like an identical system to you.. AMD64 3500+ 90nm at stock speed.. eVGA 6800LE flashed to 425/1100.. 1gig mushkin ram, msi neo2 mobo.. and stuff like that.. scored 209k higher than you..
You using 66.81 drivers? those help a lot i think