I have a PostgreSQL DB running on a Windows 2003 server and I need to be able to connect to this database from a Unix server to perform queries. What is the simplest way for me to set this up? I have seen several articles online referencing the "psql" command line tool, but I haven't seen any articles saying where to download psql. Also, would I have to install PostgreSQL on my Unix server in order for psql to work? Thanks in advance.