DBD install Q!

[TIBA, LIVIA]

When I try to run in ppm install for DBI (for eg.) it gaves me the
message:
--------------
PPM> install Dbi-1.14
Install package 'Dbi-1.14?' (y/N): y
Installing package 'Dbi-1.14'...
Error installing package 'Dbi-1.14': Could not locate a PPD file for
package Dbi
-1.14
----------------

What is the point?
Thanks,
Livia