Part way there, how do I complete it

I have just installed pgsql on a Windows XP from my administrator
account 'rj'.  I had created a power user account postgres but I did
not see where to invoke this.  It seems to be running under this admin
account but maybe that is because this is a corporate machine and the
admin account isn't realy an admin.

When I opened pgAdminIII, the Object browser window showed 'Servers
(0)'.  Nothing happened when I right
clicked - I could not add or change. When I used the menu item to add
or change connection to a server or
when I tried to add a server, the process failed with an error of
'connection failed'.  So, after reading the manual and following the
steps, I got something.  The sequence is shown below.  But it leaves
me with some questions:

1)  The encoding is win1252, I wanted to make it unicode but I missed
where to make that happen.  Can I change it for those things already
built and for things in the future?  The only things I have built are
tests so I don't care about them.  Can I change it somewhere else and
use that as a template for future dbs?

2)  I don't know what the ramification are of "WARNING: enabling
"trust" authentication".  Should I change something?

3)  I created a db called test.  I saw no difference in the pgAdminIII
so I performed the command again (as seen below) and it showed that
'test' already existed.  Why could I not see that in pgAdminIII?

4)  Up to this point, there has been no change in the look or behavior
of pgAdminIII.  So I went to File|Add server.  I added test01.  Now I
do not like what I see in the object browser.  Can I change it?  It
looks like:
  Servers(1)
    test01(localhost:5432)
      Databases (2)
        postgres
        test
      Tablespaces . . .

Postgres and test dbs only showed up after I defined test01.  I do not
want the top level server to be test01.  Is there a convension as to
how to name this?  I expect to use pgsl for 4 different applications.
I don't know if I can or should make these different servers or
different databases.  And how do I change it?  What are the
considerations?

Command line capture:

C:\Program Files\PostgreSQL\8.3\bin>initdb -D C:\Program Files
\PostgreSQL\8.3\data
The files belonging to this database system will be owned by user
"rj".
This user must also own the server process.

The database cluster will be initialized with locale English_United
States.1252.

The default database encoding has accordingly been set to WIN1252.
The default text search configuration will be set to "english".

creating directory Files/PostgreSQL/8.3/data ... ok
creating subdirectories ... ok
selecting default max_connections ... 100
selecting default shared_buffers/max_fsm_pages ... 32MB/204800
creating configuration files ... ok
creating template1 database in Files/PostgreSQL/8.3/data/base/1 ... ok
initializing pg_authid ... ok
initializing dependencies ... ok
creating system views ... ok
loading system objects' descriptions ... ok
creating conversions ... ok
creating dictionaries ... ok
setting privileges on built-in objects ... ok
creating information schema ... ok
vacuuming database template1 ... ok
copying template1 to template0 ... ok
copying template1 to postgres ... ok

WARNING: enabling "trust" authentication for local connections
You can change this by editing pg_hba.conf or using the -A option the
next time you run initdb.

Success. You can now start the database server using:

    "postgres" -D "Files/PostgreSQL/8.3/data"
or
    "pg_ctl" -D "Files/PostgreSQL/8.3/data" -l logfile start


C:\Program Files\PostgreSQL\8.3\bin>"pg_ctl" -D "Files/PostgreSQL/8.3/
data" -l logfile start
server starting

C:\Program Files\PostgreSQL\8.3\bin>createdb test

C:\Program Files\PostgreSQL\8.3\bin>createdb test
createdb: database creation failed: ERROR:  database "test" already
exists

C:\Program Files\PostgreSQL\8.3\bin>psql test
Welcome to psql 8.3.7, the PostgreSQL interactive terminal.

Type:  \copyright for distribution terms
       \h for help with SQL commands
       \? for help with psql commands
       \g or terminate with semicolon to execute query
       \q to quit

Warning: Console code page (437) differs from Windows code page (1252)
         8-bit characters might not work correctly. See psql reference
         page "Notes for Windows users" for details.

End of post.

Thanks,
Ray