How to se JDBC driver with Eclipse plugin

I'm trying to move to the eclipse plugin, but I don't know how to get the jdbc connection to work

I imported my project into eclipse and when i run the mock service i get "java.lang.ClassNotFoundException: com.mysql.jdbc.Driver"

In the SOAPUI client i simply copied the mysql connector jar into bin/ext and that fixed it

How do i get this to work with the Eclipse plug-in?

thanks