How do you make 'rlm_sql_postgresql' driver connect to Postgresql on different Ports

I have setup freeradius and Postgresql for authentication and accounting purposes. With Postgresql running on the default port 5432, the system works. If I change the port on which Postgresql runs to say 5490, how do I get the driver 'rlm_sql_postgresql' to connect to postgresql on the new port of 5490? Thank you for your help. --------------------------------- Choose the right car based on your needs. Check out Yahoo! Autos new Car Finder tool.