PostgreSQL 8.3 on OSX with MacPorts
Installing PostgreSQL on OSX Snow Leopard is pretty sinple, just install MacPorts and the issue the command:
$ sudo port install postgresql83 +universal
Start the server with:
$ sudo launchctl load -w /Library/LaunchDaemons/org.macports.postgresql83-server.plist
Stop the Server with:
sudo launchctl unload -w /Library/LaunchDaemons/org.macports.postgresql83-server.plist
Use PgAdmin III for getting started and administering your databases.