[en] How to remove ATI Catalyst from desktop right click menu

To remove the above I found a very good link here, where it says:

Removing the ATI Catalyst context-menu entry

• Open Regedit.exe and navigate to:

HKEY_CLASSES_ROOT \ Directory \ Background \ shellex \ ContextMenuHandlers

• One of the sub-keys is the entry added by ATI software. (Usually named ACE)
• Select the ACE sub-key, and then backup the key by exporting it
• Delete the ACE entry, and close Regedit.exe

The only handler present by default (in a clean XP installation) is the New handler. If you find any additional sub-keys there, it may have be added by third-party applications. Usually, the software that comes with your graphic card adds entries to the above location.