FSX problem with NVIDIA 8600GT Card solved

I had bought the Forsa NVIDIA 8600GT Display card with 256Mbyte GDDR3,
for RM175 from Micron, at Kompleks Karamunsing, Kota Kinabalu.

Initially the card was faulty because I cannot install the driver in
full.

The replacement card was tested by Micron for the night and when I
installed in my PC, the driver can be installed but I still cannot
play FSX although I can play FS9 and Xplane9 at amazing frame refresh
speed, more than 30 frames/second even in the higest quality setting.

Luckily this tip came:

http://www.gamespot.com/pages/forums/show_msgs.php?topic_id=26165196

It is just that FSX cannot play when NVIDIA driver is in the Dual
Monitor mode. There is no such problem with AMD/ATI driver(HD3450
card).

My NVIDIA driver is the latest one dated Dec 2008.

When autogen were set to high, the frame speed dropped to less than 10
frame/second. With everything else set to ultra high except the
autogen being switched off, the frame rate increases to slightly more
than 20.

Although I salivate for the HD4670 with 512Mbyte DDR3 RAM, I believe
the price of RM300 does not warrant the quality increase for FSX. I
don't like autogenerated scenery or texture anyway. Whenever there is
a frame rate problem, I shall sacrifice autogen first. I would rather
that Flgiht Simulators use low resolution photosceneries for textures,
than autogenerated high resolution sceneries that are so artificial,
but the AI traffic is interesting but not essential.