Thread closed. ***PLEASE NOTE***
This method works for some, others it DOES NOT. If you decide to use this method, and it doesn't work, here is the fix (if you receive app 200 error after installing OS)
1) uninstall the OS that you just installed, from your PC - in add/remove programs.
2) reboot PC and reinstall the OS again - to your PC
3) edit the blackberry.alx file using this thread/how to
http://blackberryforums.pinstack.com...or_themes.html
to delete the ptt feature, simply follow THIS path exactly (AFTER you install the OS back on your PC) and delete the file.
C:\Program Files\Common Files\Research In Motion\Shared\Loader Files\
8300-v4.2.2.114_P2.4.0.53\Java
the digits in red may be different, but as long as its the 8300 OS you will be fine