diff --git a/UPGRADE_TO_2_0 b/UPGRADE_TO_2_0
index 9181fc3df..134c9dade 100644
--- a/UPGRADE_TO_2_0
+++ b/UPGRADE_TO_2_0
@@ -1,4 +1,90 @@
-Upgrade to Doctrine 2.0
-#######################
+## Installing
 
-More information coming soon...
+Currently the only way to install is via svn. So just checkout the trunk.
+
+    $ svn co http://svn.doctrine-project.org/trunk/lib doctrine
+    $ cd doctrine
+
+## Loading Doctrine
+
+First we need to require one class, the `ClassLoader`.
+
+>**NOTE**
+> This assumes you've created some kind of script to test the following code in. Something like a `test.php` file.
+
+    [php]
+    // test.php
+
+    require_once 'lib/Doctrine/Common/ClassLoader.php';
+
+Now we need to instantiate the `ClassLoader` and register it:
+
+    [php]
+    $classLoader = new \Doctrine\Common\ClassLoader();
+    $classLoader->register();
+
+The Doctrine `ClassLoader` supports the ability to use it for loading other classes with a prefix.
+
+Here are the recommend usages for the Doctrine `ClassLoader`:
+
+* Use only 1 class loader instance.
+* Set the base paths to your class libraries (including Doctrine's) through
+
+-
+
+    [php]
+    $classLoader->setBasePath($prefix, $basePath);
+
+For example you can set the path for Doctrine with the following:
+
+    [php]
+    $classLoader->setBasePath('Doctrine', '/usr/local/phplibs/doctrine/lib');
+
+Then, when trying to load the class Doctrine\ORM\EntityManager, for example the class loader will look for /usr/local/phplibs/doctrine/lib/Doctrine/ORM/EntityManager.php
+
+* DO NOT setCheckFileExists(true). Doing so is expensive in terms of performance.
+* Use an opcode-cache (i.e. APC) (STRONGLY RECOMMENDED).
+
+## Initialize Doctrine
+
+    [php]
+    $config = new \Doctrine\ORM\Configuration();
+    $config->setMetadataCacheImpl(new \Doctrine\ORM\Cache\ArrayCache);
+    $eventManager = new \Doctrine\Common\EventManager();
+    $connectionOptions = array(
+            'user' => 'john',
+            'password' => 'wayne'
+    );
+    $em = \Doctrine\ORM\EntityManager::create($connectionOptions, 'doctrine', $config, $eventManager);
+
+## Getting the Connection
+
+    [php]
+    $conn = $em->getConnection();
+    $conn->delete('table_name', array(1, 3, 10));
+
+The DBAL Connection class has lots of useful functions. You can browse the code and check the API to get familiar.
+
+## The Schema Manager
+
+The schema manager is a nice API for issuing database DDL statements like creating a table, or dropping a table.
+
+    [php]
+    $sm = $connection->getSchemaManager();
+
+The schema manager allows you to do all the familiar options on your schema. Like `createTable()`. Below you will find an example:
+
+    [php]
+    $sm->createTable($tableName, $columns, $options);
+
+## The Platform Object
+
+The platform object is the object that provides the appropriate SQL to the schema manager for the DDL statements.
+
+    [php]
+    $platform = $connection->getDatabasePlatform();
+
+Now we can get the generated SQL instead of executing it directly:
+
+    [php]
+    $sql = $platform->getCreateTableSql($tableName, $columns, $options);
\ No newline at end of file
diff --git a/lib/Doctrine/ORM/EntityManager.php b/lib/Doctrine/ORM/EntityManager.php
index 101b97d5d..b370307e0 100644
--- a/lib/Doctrine/ORM/EntityManager.php
+++ b/lib/Doctrine/ORM/EntityManager.php
@@ -59,14 +59,6 @@ class EntityManager
      */
     const FLUSHMODE_MANUAL = 'manual';
     
-    /**
-     * The currently active EntityManager. Only one EntityManager can be active
-     * at any time.
-     *
-     * @var Doctrine\ORM\EntityManager
-     */
-    private static $_activeEm;
-    
     /**
      * The unique name of the EntityManager.
      *
@@ -536,18 +528,6 @@ class EntityManager
         return $this->_unitOfWork;
     }
     
-    /**
-     * Checks whether this EntityManager is the currently active one.
-     *
-     * Note:This is only useful in scenarios where {@link ActiveEntity}s are used.
-     *
-     * @return boolean
-     */
-    public function isActive()
-    {
-        return self::$_activeEm === $this;
-    }
-
     /**
      * Gets a hydrator for the given hydration mode.
      *
@@ -593,16 +573,6 @@ class EntityManager
         $this->_hydrators[$hydrationMode] = $hydrator;
     }
     
-    /**
-     * Makes this EntityManager the currently active one.
-     *
-     * Note: This is only useful in scenarios where {@link ActiveEntity}s are used.
-     */
-    public function activate()
-    {
-        self::$_activeEm = $this;
-    }
-    
     /**
      * Factory method to create EntityManager instances.
      *
@@ -636,17 +606,4 @@ class EntityManager
         
         return $em;
     }
-    
-    /**
-     * Static lookup to get the currently active EntityManager.
-     *
-     * Note: Used by {@link ActiveEntity}s to actively lookup an EntityManager.
-     * 
-     * @return Doctrine\ORM\EntityManager
-     */
-    public static function getActiveEntityManager()
-    {
-        return self::$_activeEm;
-    }
-}
-
+}
\ No newline at end of file
diff --git a/tests/Doctrine/Tests/ORM/EntityPersisterTest.php b/tests/Doctrine/Tests/ORM/EntityPersisterTest.php
index ec2caa5e4..95384a398 100644
--- a/tests/Doctrine/Tests/ORM/EntityPersisterTest.php
+++ b/tests/Doctrine/Tests/ORM/EntityPersisterTest.php
@@ -35,8 +35,6 @@ class EntityPersisterTest extends \Doctrine\Tests\OrmTestCase
         $this->_emMock->setUnitOfWork($this->_uowMock);
         $this->_idGenMock = new SequenceMock($this->_emMock);
         $this->_emMock->setIdGenerator('Doctrine\Tests\Models\Forum\ForumUser', $this->_idGenMock);
-                
-        $this->_emMock->activate();
     }
     
     public function testSimpleInsert() {
diff --git a/tests/Doctrine/Tests/OrmTestCase.php b/tests/Doctrine/Tests/OrmTestCase.php
index d78f29050..8a9e896e2 100644
--- a/tests/Doctrine/Tests/OrmTestCase.php
+++ b/tests/Doctrine/Tests/OrmTestCase.php
@@ -15,7 +15,8 @@ class OrmTestCase extends DoctrineTestCase
      *
      * @return Doctrine\ORM\EntityManager
      */
-    protected function _getTestEntityManager($conf = null, $eventManager = null) {
+    protected function _getTestEntityManager($conf = null, $eventManager = null)
+    {
         $config = new \Doctrine\ORM\Configuration();
         $config->setMetadataCacheImpl(self::getSharedMetadataCacheImpl());
         $eventManager = new \Doctrine\Common\EventManager();