请问这是怎么回事？

infante0810

install_driver(mysql) failed: Can't locate DBD/mysql.pm in @INC (@INC contains: C:/Perl/lib C:/Perl/
site/lib .) at (eval 1) line 3.
Perhaps the DBD::mysql perl module hasn't been fully installed,
or perhaps the capitalisation of 'mysql' isn't right.
Available drivers: ExampleP, Multiplex, Proxy, SQLRelay, mysqlPP.

infante0810

C:\Perl\bin>;ppm
PPM interactive shell (2.2
PPM>; query
Archive-Tar      [0.072  ]
Compress-Zlib    [1.16   ]
DBD-Multiplex    [1.9    ]
DBD-SQLrelay     [0.1    ]
DBD-mysqlPP      [0.03   ]
DBI              [1.32   ]
DBIx-AnyDBD      [2.01   ]
Digest           [1      ]
Digest-HMAC      [1.01   ]
Digest-MD2       [2      ]
Digest-MD4       [1.1    ]
Digest-MD5       [2.20   ]
Digest-SHA1      [2.01   ]
File-CounterFile [0.12   ]
Font-AFM         [1.18   ]
HTML-Parser      [3.26   ]
HTML-Tagset      [3.03   ]
HTML-Tree        [3.11   ]
MD5              [2.02   ]
MIME-Base64      [2.12   ]
Net-MySQL        [0.07   ]
PPM              [2.2    ]