Hi Jassica!
The DBD driver you need depends on the database you are using (
DBD::Oracle for Oracle,
DBD::mysql for MySql (as you need), ...).
Some of the databases, like the mySQL which you are writing about, have more that one driver (like
gmax already wrote), so you can choose one depending on the features. Anyhow,
DBD::mysql is the most common choice.
Have a look at their pages on CPAN for more information.
Michele.