ReactOS is missing some Start Menu-related registry keys.

ReactOS is missing these registry keys:

1. HKEY_CLASSES_ROOT\CLSID
   {2559a1f0-21d7-11d4-bdaf-00c04f60b9f0}

   ,     "Search"

2. HKEY_CLASSES_ROOT\CLSID
   {2559a1f1-21d7-11d4-bdaf-00c04f60b9f0}

   ,     "Help and Support"

3. HKEY_CLASSES_ROOT\CLSID
   {2559a1f2-21d7-11d4-bdaf-00c04f60b9f0}

   ,     "Windows Security"

4. HKEY_CLASSES_ROOT\CLSID
   {2559a1f3-21d7-11d4-bdaf-00c04f60b9f0}

   ,     "Run..."

5. HKEY_CLASSES_ROOT\CLSID
   {2559a1f4-21d7-11d4-bdaf-00c04f60b9f0}

   ,     "Internet"

6. HKEY_CLASSES_ROOT\CLSID
   {2559a1f5-21d7-11d4-bdaf-00c04f60b9f0}

   ,     "E-mail"

7. HKEY_CLASSES_ROOT\CLSID
   {2559a1f7-21d7-11d4-bdaf-00c04f60b9f0}

   ,     "Set Program Access and Defaults"

These are shell items used in the start menu. Not sure whether the classic start menu uses them. Number 6 is supposed to be for adding an OEM-specific item to the start menu.

Number four is the internet icon. This icon leads to your default browser, and includes context menu items specific to that browser. Browsers register this in "HKEY_CURRENT_USER\Software\Clients\StartMenuInternet". The link I gave includes instructions on how to add this icon to the desktop, and information about it.