connecting to running db server

Hi,

I try to get an instance of Postgres 9.1.5 ready for some SQL programming.
I have installed the software along with Drupal 7 and mediaWiki. After
starting the pgAdmin III it tells me the server is running. So I try to
connect to it using the respective button. Then the problem comes. I don't
know where to put the pg_service.conf file under Windows 7. I have the
content of it as:
[postgres]
dbname=postgres
user=postgres.

I have tried as a location several directories within C:\Windows\SysWOW64
but nothing worked. All the time the response to the connect request
asissued by me from within the admin tool resulted in the message that
the
definition of the "postgres" service could not be found.

Of course I put the data in at best I could on the property tag of the
server registration.

Who can help? Would be much appreciated.

Thank you.

--
Roland Kaschek
University of the Faroe Islands
Noatun 3
FO 100 Torshavn
Faroe Islands
00298 292560