MySQL/SQL Server datasources under Linux

Hi,
I'd like some advice about the possibilities of accessing MySQL and SQL Server databases from Pipeline Pilot. The server sits on a RedHat Linux box, and I believe the ODBC drivers for both databases are installed on this. The help document admin_ref.pdf gives detail about what you need to do to connect to Oracle or DB2. Could anybody give me a similar stepwise guide (possibly tailored for the less technical) to doing the same for MySQL and SQL Server?
Thanks in advance for your help.

Justin