ok...NV官方講明支援DX 9.0c是從官方的61.77開始
http://www.nvidia.com/object/winxp_2k_61.77.html

Microsoft𦲷 DirectX𦲷 9.0c and OpenGL𦲷 1.5 support

其實61.76也有支援只是還沒有通過M$的DX9.0c WHQL認證...
http://www.nvidia.com/object/winxp_2k_61.76.html

Updated July 20, 2004 9:00 PM PDT: Windows XP / 2000 61.76 is WHQL certified using DirectX 9.0b. The WHQL tests for DirectX 9.0c were not available at this time. When DirectX 9.0c is available, NVIDIA will release drivers to support it.