Writing Text Files from PostgreSQL

Hello. I am brand new to PostgreSQL and I need someone to point me in
the right direction on how to write the results of a function to a text
file. Is it possible to do this within the PostgreSQL PL/pgSQL
language? I have done this before in Oracle using the UTL_FILE commands
and I was hoping that PostgreSQL had similar functionality. I need to
provide some data formatting in the text file that I produce so I don't
think the pg_dump command would work for me (correct me if I am wrong
though). Thanks in advance for any help that you can give.

System Specs:
PostgreSQL 8.1 on Linux

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William Gerber
ERG
5608 Parkcrest Drive, Suite 100
Austin, TX 78731-4947
ph: 512-407-1827
fax: 512-419-0089
e-mail: william(dot)gerber(at)erg(dot)com
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