diff --git a/bin/composer b/bin/composer
index 030566656..623d10b15 100755
--- a/bin/composer
+++ b/bin/composer
@@ -18,8 +18,8 @@ $rm->setRepository('Packagist', new Repository\ComposerRepository('http://packag
 // initialize download manager
 $dm = new Downloader\DownloadManager($preferSource = false);
 $dm->setDownloader('git',  new Downloader\GitDownloader());
-//$dm->setDownloader('pear', new Downloader\PearDownloader());
-//$dm->setDownloader('zip',  new Downloader\ZipDownloader());
+$dm->setDownloader('pear', new Downloader\PearDownloader());
+$dm->setDownloader('zip',  new Downloader\ZipDownloader());
 
 // initialize installation manager
 $im = new Installer\InstallationManager();
diff --git a/src/Composer/Downloader/PearDownloader.php b/src/Composer/Downloader/PearDownloader.php
index 0f4c86289..d059b5151 100644
--- a/src/Composer/Downloader/PearDownloader.php
+++ b/src/Composer/Downloader/PearDownloader.php
@@ -20,9 +20,33 @@ use Composer\Package\PackageInterface;
  */
 class PearDownloader implements DownloaderInterface
 {
-    public function download(PackageInterface $package, $path, $url, $checksum = null)
+    /**
+     * {@inheritDoc}
+     */
+    public function download(PackageInterface $package, $path, $url, $checksum = null, $useSource = false)
+    {
+        $this->downloadTo($package, $url, $path, $checksum);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function update(PackageInterface $initial, PackageInterface $target, $path, $useSource = false)
+    {
+        // TODO rm old dir
+        $this->downloadTo($package, $url, $path, $checksum);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function remove(PackageInterface $package, $path, $useSource = false)
+    {
+        echo 'rm -rf '.$path; // TODO
+    }
+
+    private function downloadTo($package, $url, $targetPath, $checksum = null)
     {
-        $targetPath = $path . "/" . $package->getName();
         if (!is_dir($targetPath)) {
             if (file_exists($targetPath)) {
                 throw new \UnexpectedValueException($targetPath.' exists and is not a directory.');
diff --git a/src/Composer/Downloader/ZipDownloader.php b/src/Composer/Downloader/ZipDownloader.php
index 94a7eac0e..5c67ed62d 100644
--- a/src/Composer/Downloader/ZipDownloader.php
+++ b/src/Composer/Downloader/ZipDownloader.php
@@ -19,13 +19,37 @@ use Composer\Package\PackageInterface;
  */
 class ZipDownloader implements DownloaderInterface
 {
-    public function download(PackageInterface $package, $path, $url, $checksum = null)
+    /**
+     * {@inheritDoc}
+     */
+    public function download(PackageInterface $package, $path, $url, $checksum = null, $useSource = false)
+    {
+        $this->downloadTo($url, $path, $checksum);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function update(PackageInterface $initial, PackageInterface $target, $path, $useSource = false)
+    {
+        // TODO rm old dir
+        $this->downloadTo($url, $path, $checksum);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function remove(PackageInterface $package, $path, $useSource = false)
+    {
+        echo 'rm -rf '.$path; // TODO
+    }
+
+    private function downloadTo($url, $targetPath, $checksum = null)
     {
         if (!class_exists('ZipArchive')) {
             throw new \UnexpectedValueException('You need the zip extension enabled to use the ZipDownloader');
         }
 
-        $targetPath = $path . "/" . $package->getName();
         if (!is_dir($targetPath)) {
             if (file_exists($targetPath)) {
                 throw new \UnexpectedValueException($targetPath.' exists and is not a directory.');
@@ -40,19 +64,18 @@ class ZipDownloader implements DownloaderInterface
         copy($url, $zipName);
 
         if (!file_exists($zipName)) {
-            throw new \UnexpectedValueException($path.' could not be saved into '.$zipName.', make sure the'
+            throw new \UnexpectedValueException($targetPath.' could not be saved into '.$zipName.', make sure the'
                 .' directory is writable and you have internet connectivity.');
         }
 
         if ($checksum && hash_file('sha1', $zipName) !== $checksum) {
-            throw new \UnexpectedValueException('The checksum verification failed for the '.$package->getName().' archive (downloaded from '.$url.'). Installation aborted.');
+            throw new \UnexpectedValueException('The checksum verification failed for the '.basename($path).' archive (downloaded from '.$url.'). Installation aborted.');
         }
 
         $zipArchive = new \ZipArchive();
 
         echo 'Unpacking archive'.PHP_EOL;
         if (true === ($retval = $zipArchive->open($zipName))) {
-            $targetPath = $path.'/'.$package->getName();
             $zipArchive->extractTo($targetPath);
             $zipArchive->close();
             echo 'Cleaning up'.PHP_EOL;