if your question is not related to Fedora, for example how to install and configure Postgres under Fedora etc., it's better to ask on their mailing-list for novices: overview of their mailing lists
I'm also experimented with PostgreSQL, phpPgAdmin, pgAdmin III recently. To install and configure this database and these two tools, it took me several hours until connection worked.
A first step guide (chapter 1 from the book "PostgreSQL 9 Administration Cookbook") is here: http://www.packtpub.com/sites/defaul...m_campaign=pdf
well under Fedora Linux this setup guide wasn't very helpful, but nevertheless it was partly interesting for me. If you want to setup it under Windows, it should be more helpful.
and the Postgres manual place could also help: http://www.postgresql.org/docs/manuals/