Specifications

Anisotropic filtering makes textures that are far off appear less blurry and helps to eliminate 'texture aliasing'
where textures appear to shimmer in the middle distance.
The 11.xx+ drivers enable anisotropic filtering, and provide a control panel option in OpenGL, but the code in
the 11.01 control panel is buggy and doesn't work.
In the final 12.xx driver release enabling anisotropic filtering should be provided for in the NVIDIA control
panel: in the mean time you can use registry files to force anisotropic filtering in all 3D applications:

You can use the anis(xx)tap.reg registry files to force the different levels of anisotropic filtering for both
Direct3D and OpenGL under Windows 9x/ME - available here:
http://www.geforcefaq.com/files/anis16tap.reg
http://www.geforcefaq.com/files/anis32tap.reg
http://www.geforcefaq.com/files/anis64tap.reg
You can use the anisoff.reg registry file to stop the effect of these keys - available here:
http://www.geforcefaq.com/files/anisoff.reg
If these files don't seem to have any effect, you may have to edit them in Notepad and change the 0000 to
0001, or another value. Take a look at the
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Display registry key using
regedit and find out which number your graphics card is using.

You can use the anis(xx)tapw2k.reg registry files to force the different levels of anisotropic filtering for
both Direct3D and OpenGL under Windows 2000 - available here:
http://www.geforcefaq.com/files/anis16tapw2k.reg
http://www.geforcefaq.com/files/anis32tapw2k.reg
http://www.geforcefaq.com/files/anis64tapw2k.reg
You can use the anisoffw2k.reg registry file to stop the effect of these keys - available here:
http://www.geforcefaq.com/files/anisoffw2k.reg
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Q. How can I enable AGP4X in the Detonator 5.16+ driver sets on my VIA 133mhz chipset
motherboard?

AGP4X is disabled on these motherboards because of issues with AGP4X, VIA chipsets and the
GeForce2. The registry files below may cause problems if you have a GeForce2. If you do get these
problems, try reading the 'I have a VIA chipset based motherboard and I can't get AGP4X to work
without causing instability. How can I fix it?' question.

Many thanks to PJ who discovered this registry key.
In the 5.16 and later drivers in Windows 9x/ME you can use the viaagp4xon.reg registry file to enable
AGP4X on VIA 133mhz chipset motherboards only - available here:
http://www.geforcefaq.com/files/viaagp4xon.reg
If you have problems after enabling this, use the viaagp4xoff.reg registry file to disable it again -
available here:
http://www.geforcefaq.com/files/viaagp4xoff.reg

Many thanks to Joe Meheski who discovered this registry key.
In the 5.16 and later drivers in Windows 2000 you can use the viaagp4xonw2k.reg registry file to enable
AGP4X on VIA 133mhz chipset motherboards only - available here:
http://www.geforcefaq.com/files/viaagp4xonw2k.reg
If you have problems after enabling this, use the viaagp4xoffw2k.reg registry file to disable it again -
available here:
http://www.geforcefaq.com/files/viaagp4xoffw2k.reg
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GeForce FAQ