This has been posted everywhere so I take no credit,these are the files from 2.3.20.2 to add them to your favorite theme or anything just download the .zip of your choice. Using Ninjamorph from your phone find /system/framework/framework-res.apk go to the res folder replace the anim folder with the new anim folder of the transition you want,then finish the project. From your computer replace the anim file in framework-res.apk/res then put it on your sdcard. From terminal emulator type su ,sys -rw ,cp /sdcard/framework-res.apk /system/framework,sys -ro ,sync but it will probably freeze and reboot by the last two steps.