Support on PEAR's PhPDocumentor package

Hello

I've installed PEAR in 'C:\Program Files\PEAR' on Windows, I've tested the installation and the result was OK.
Then I've tried to install PhpDocumentor with the command :

C:\Documents and Settings\david.cohen>pear install PhpDocumentor
No releases available for package "pear.php.net/PhpDocumentor"
install failed

'
And with the command :

C:\Documents and Settings\david.cohen>pear install --alldeps PhpDocumentor
No releases available for package "pear.php.net/PhpDocumentor"
install failed

My pear Configuration:

C:\Documents and Settings\david.cohen>pear config-show
CONFIGURATION (CHANNEL PEAR.PHP.NET):
=====================================
Auto-discover new Channels     auto_discover    <not set>
Default Channel                default_channel  pear.php.net
HTTP Proxy Server Address      http_proxy       <not set>
PEAR server [DEPRECATED]       master_server    pear.php.net
Default Channel Mirror         preferred_mirror pear.php.net
Remote Configuration File      remote_config    <not set>
PEAR executables directory     bin_dir          C:\Program Files\PEAR\bin
PEAR documentation directory   doc_dir          C:\Program Files\PEAR\docs
PHP extension directory        ext_dir          ext
PEAR directory                 php_dir          C:\Program Files\PEAR\php
PEAR Installer cache directory cache_dir        C:\DOCUME~1\DAVID~1.COH\LOCALS
\Temp\pear\cache
PEAR configuration file        cfg_dir          C:\Program Files\PEAR\conf
directory
PEAR data directory            data_dir         C:\Program Files\PEAR\data
PEAR Installer download        download_dir     C:\Program Files\PEAR\download
directory
PHP CLI/CGI binary             php_bin          C:\wamp\bin\php\php5.3.8\php.e

php.ini location               php_ini          <not set>
--program-prefix passed to     php_prefix       <not set>
PHP's ./configure
--program-suffix passed to     php_suffix       <not set>
PHP's ./configure
PEAR Installer temp directory  temp_dir         C:\Program Files\PEAR\temp
PEAR test directory            test_dir         C:\Program Files\PEAR\tests
PEAR www files directory       www_dir          C:\Program Files\PEAR\www
Cache TimeToLive               cache_ttl        3600
Preferred Package State        preferred_state  stable
Unix file mask                 umask            0
Debug Log Level                verbose          1
PEAR password (for             password         <not set>
maintainers)
Signature Handling Program     sig_bin          c:\gnupg\gpg.exe
Signature Key Directory        sig_keydir       C:\Program Files\PEAR\pearkeys
Signature Key Id               sig_keyid        <not set>
Package Signature Type         sig_type         gpg
PEAR username (for             username         <not set>
maintainers)
User Configuration File        Filename         C:\Program Files\PEAR\pear.ini
System Configuration File      Filename         C:\Program Files\PEAR\pearsys.
i

Can you tell me what is wrong?
Thanks


David Cohen