Flashbuilder 4.5 for php using a postgres database

Greetings,

Currently have Adobe Flex Builder 3.  Looking at upgrading to flashbuilder 4.5 for php.

Downloaded flashbuilder 4.5 for php trial.    Have postgres database installed on separate ubuntu machine.

I can't quite get things to work.  I am trying to follow the tutorial "Flex Test Drive: Build an application in an hour".

The tutorial expects a mysql database backend.  It also isn't clear on creating a new project.

Any help greatly appreciated.

thanks.