can you pm me too? i have the same problem
Yes, I will, but I'm also going to post a guide here on how to get the OpenGL version from a previous Catalyst release.
1. We need to get the display driver package you're looking for. Go here and select your the right OS version (I select individual components and video driver only). You'll notice a "previous version" in red above the download links, click it and get the version you need, 10.4 in this case.
http://game.amd.com/us-en/drivers_catalyst.aspx
2. Now that it's downloaded, run your new file and it'll extract to your C:\ATI\Support\(Cat Version)\Packages\Drivers\Display\(Win version)_INF\B_99645\ Cancel the install when Catalyst Install Manager loads.
3. Go to the above folder in explorer, find atioglxx.dl_ and copy that to C:\ATI for easy access for the next part.
4. Run CMD (Windows XP Start -> Run -> Type in 'cmd' sans quotes, hit enter.) (Vista/7 click Start -> Type in cmd and it will show up in the list above -> Right-Click on cmd and select Run As Administrator)
5. The command-line will probably open in your User folder, but we need to get to C:\ATI for that atioglxx.dl_ file. Once you're there, you need to uncompress it into atioglxx.dll. So type in these commands below
cd C:\ATI
expand atioglxx.dl_
6. Copy your newly created atioglxx.dll to you game's directory, (eg. C:\Program Files\Activision\WolfET) then run the game.
Let me know if any of the above commands don't work, as I'm doing this from memory & writing this guide from Linux. Thanks, and good luck!