The DBI and DBD::Oracle are both available on the CPAN from those links. In addition, you'll need the Oracle client for Windows 2000, either from your CDs or from the Oracle OTN site.

Both DBI and DBD::Oracle come with good documentation that you can also get online. If you haven't used the DBI before, you may want to invest in the book Programming the Perl DBI. You can buy it printed or O'Reilly's Safari version.

Of course, if you haven't already, you may want to look into getting a Perl book, like the Camel or the Llama, or any of the excellent collections.

HTH