ENABLE
Windows Registry Editor Version 5.00[HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}]@="Firefox"[HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\DefaultIcon]@="C:\\Program Files\\Mozilla Firefox\\firefox.exe,0"[HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\Shell]@="&Open"[HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\Shell\Open][HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\Shell\Open\Command]@="C:\\Program Files\\Mozilla Firefox\\firefox.exe"[HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\Shell\Options]@="Op&tions"[HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\Shell\Options\Command]@="C:\\Program Files\\Mozilla Firefox\\firefox.exe -chrome chrome://browser/content/pref/pref.xul"[HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\Shell\Profile Manager]@="&Profile Manager"[HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\Shell\Profile Manager\Command]@="C:\\Program Files\\Mozilla Firefox\\firefox.exe -p"[HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\Shell\Safe Mode]@="&Safe Mode"[HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\Shell\Safe Mode\Command]@="C:\\Program Files\\Mozilla Firefox\\firefox.exe -safe-mode"[HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\ShellEx][HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\ShellEx\PropertySheetHandlers][HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\ShellEx\PropertySheetHandlers\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}][HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}\ShellFolder]"Attributes"=hex:00,00,00,00[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}]
DISABLE
Windows Registry Editor Version 5.00[-HKEY_CLASSES_ROOT\CLSID\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}][-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Desktop\NameSpace\{0011C78C-4B81-41d2-80F5-3D992DD9ACC7}]
These tweaks will work on 9x/ME, just change the first line from ?Windows Registry Editor Version 5.00″ to ?REGEDIT4″.
Source: http://collingrady.com/2004/12/12/firefox-...ic-desktop-icon