I hear you can install a MySQL plugin, but where can I get that?
Quote from the first google hit:
LINQPad's MySQL driver has recently been updated so that it works with MySQL databases with no password. To load the new driver, click 'Add Connection', 'View More Drivers' and select the IQ driver again to download.
If you're using LINQPad, you don't need to first download the MySQL Connector - LINQPad has everything you need.