Drivers that works with no problems:
3.9
4.1
4.2 (Used on my system at the moment)
4.3
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And those that do not work:
All versions up till and included 3.8 and:
4.4
4.5
To install the drivers, you can just overwrite these 2 files located in:
:\Windows\System32
:\Windows\SysWOW64
The system will allow it, with no problems. (Have only tested that, when
having admin. rights though) (have had problems here xp64 rewrites old files)
You can get the Catalyst driver packages from Ati:
http://www.ati.com/support/products/radeonwin2kpreviousdrivers.html
In case you download it, the file atioglxx.dl_ must be extracted and
expanded, and renamed to atioglxx.dll.
After extraction (I use Winzip) the file must be expanded.
From a command line type:
EXPAND atioglxx.dl_ C:\TMP (or which dir. you use for temporary files)
Now rename the expanded file to atioglxx.dll. and Copy the file to
these 2 directories:
\Windows\System32
\Windows\SysWOW64
You are now ready to play OpenGl games, on your WinXP64 OS.
now you can always take that atioglxx.dl_ file and replace the ati64bit driver one from teh unexpanded instalation file. then just run setup.