21.5" iMac brightness problem under Windows 7

Even at lowest possible brightness under Windows 7,
this is much too bright for working in the evening/night.
I was using VistaShades under Vista, but now under Windows 7
VistaShades only darkens the background!
Does anyone know another program for reducing the brightness
which is Windows 7 compatible?
Thanks!
(BTW: I have the same problem using my 24" iMac under Windows 7
see http://discussions.apple.com/thread.jspa?threadID=2358779&tstart=0)

I has the same problem so i called a friend and all he did was go to navida's web site and download the beta drivers for gforce go 7600. make sure it is for windows 7. the ones on HP's website does not work and you can not use auto detect drivers when finding the driver.

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