Brought this up to date, and reworded some stuff

UPGRADING

@@ -1,16 +1,20 @@
 UPGRADING   $Id$
 ---------
 
-Since the first main release of Moodle (2002080100)
-most upgrading is done automatically.  See the file
-version.php for all the details.
+As Moodle grows, there are changes to the code and 
+sometimes changes to the database structures.
+
+Moodle is able to upgrade its own databases, using 
+information in files called version.php.  There is 
+one of these for the main tables (in this directory)
+and one for each module.
 
 When upgrading from any previous version of Moodle, 
 all you normally will need to do is this:
 
 1)  Make a backup of your current Moodle installation 
-    just in case something goes wrong and you need 
-    to restore the older version.
+    in the unlikely case that something goes wrong and 
+    you need to restore the older version.
 
 2a) If you are using CVS, just go the root directory
     and type "cvs update -d" (or whatever the equivalent
@@ -19,17 +23,17 @@ all you normally will need to do is this:
                        OR
 
 2b) Remove the current installation, and then unpack 
-    the new installation in the same location.
+    the new tar or zip file in the same location.
     Make sure you copy the config.php file from your 
     old installion to the new installation (or make a 
     new one by editing config-dist.php).
 
-3)  IMPORTANT: Login as the admin user and visit 
-    http://your.moodle.site/admin using a web browser.
+3)  Visit the home page of your installation.  Moodle
+    will automatically detect the new version and perform 
+    any database upgrades that might be necessary.
 
-If all goes well, your databases will be upgraded to 
-suit the new files, and you can go on using Moodle
-normally.
+If all goes well (no error messages) then you can just 
+go on using Moodle normally.
 
 If you have problems with this procedure, let me know.