This is just a zip file with all the files modified for the HTC Aria. Works great with that last EGL-enabled build of the CM9 rom in WinSuk's thread (I need 10 posts to thank him!?!? wtf?).
Here are instructions for rooted users:
1) Download the zip.
2) Unpack and you'll see the system folder with its hierarchies.
3) Open up Terminal (i'm a Mac) or cmd.exe (Windows).
4) adb push <my_unzipped_folder_here>/system/framework/android.policy.jar /system/framework/android.policy.jar
5) adb push <my_unzipped_folder_here>/system/usr/keylayout/ /system/usr/keylayout/
The HTC Aria with CM9 + EGL, and this mod makes it a seriously amazing phone (arguably far better than stock. it runs faster than my iCuttingBoard 1st gen too!)