If you can't get DBD::Oracle to build, using DBD::ODBC is probably the simplest solution on a Windows machine.

I haven't done it myself, I had no problem compiling DBD::Oracle using Visual Studio (install and configure the Oracle Client library first).

You may have to install the Oracle Client library to get the ODBC driver for Oracle. Then it should be easy to set up a data source.

Good luck!

/J