diff --git a/Documentation/NuttxPortingGuide.html b/Documentation/NuttxPortingGuide.html
index 4e599100184..8d6a3544ccb 100644
--- a/Documentation/NuttxPortingGuide.html
+++ b/Documentation/NuttxPortingGuide.html
@@ -12,7 +12,7 @@
       <h1><big><font color="#3c34ec">
         <i>NuttX RTOS Porting Guide</i>
       </font></big></h1>
-      <p>Last Updated: July 12, 2011</p>
+      <p>Last Updated: July 13, 2011</p>
     </td>
   </tr>
 </table>
@@ -3763,6 +3763,19 @@ build
   <li>
     <code>CONFIG_FAT_SECTORSIZE</code>: Max supported sector size.
   </li>
+  <li>
+    <code>CONFIG_FAT_LCNAME</code>: Enable use of the NT-style upper/lower case 8.3 file name support.
+  </li>
+  <li>
+    <code>CONFIG_FAT_LFN</code>: Enable FAT long file names.
+      NOTE:  Microsoft claims patents on FAT long file name technology.
+      Please read the disclaimer in the top-level COPYING file and only enable this feature if you understand these issues.
+  </li>
+  <li>
+    <code>CONFIG_FAT_MAXFNAME</code>: If <code>CONFIG_FAT_LFN</code> is defined, then the default, maximum long file name is 255 bytes.
+      This can eat up a lot of memory (especially stack space).
+      If you are willing to live with some non-standard, short long file names, then define this value.
+  </li>
   <li>
     <code>CONFIG_FS_NXFFS</code>: Enable NuttX FLASH file system (NXFF) support.
   </li>