PostgreSQL Database interfaced by Java Applet

Hi,

I've never worked with PostgreSQL and Java, but I've made
web-applications in VB.NET using MS SQL Server.  I know that I need a
JDBC Driver, but I have no clue as to:

1.) where I can get one.
2.) whether I need to set up an ODBC connection
3.) or just generally where to begin.

Any help provided will be greatly appreciated.

Thanks,

skeize@gmail.com