pg_ctl is a utility to start, stop, restart, reload configuration files,
report the status of a PostgreSQL server, or signal a PostgreSQL process.

Usage:
  pg_ctl start   [-w] [-D DATADIR] [-s] [-l FILENAME] [-o "OPTIONS"]
  pg_ctl stop    [-W] [-D DATADIR] [-s] [-m SHUTDOWN-MODE]
  pg_ctl restart [-w] [-D DATADIR] [-s] [-m SHUTDOWN-MODE] [-o "OPTIONS"]
  pg_ctl reload  [-D DATADIR] [-s]
  pg_ctl status  [-D DATADIR]
  pg_ctl kill    SIGNALNAME PID
  pg_ctl register   [-N SERVICENAME] [-U USERNAME] [-P PASSWORD] [-D DATADIR]
                    [-w] [-o "OPTIONS"]
  pg_ctl unregister [-N SERVICENAME]

Common options:
  -D, --pgdata DATADIR   location of the database storage area
  -s, --silent           only print errors, no informational messages
  -w                     wait until operation completes
  -W                     do not wait until operation completes
  --help                 show this help, then exit
  --version              output version information, then exit
(The default is to wait for shutdown, but not for start or restart.)

If the -D option is omitted, the environment variable PGDATA is used.

Options for start or restart:
  -l, --log FILENAME     write (or append) server log to FILENAME
  -o OPTIONS             command line options to pass to postgres
                         (PostgreSQL server executable)
  -p PATH-TO-POSTGRES    normally not necessary

Options for stop or restart:
  -m SHUTDOWN-MODE   may be "smart", "fast", or "immediate"

Shutdown modes are:
  smart       quit after all clients have disconnected
  fast        quit directly, with proper shutdown
  immediate   quit without complete shutdown; will lead to recovery on restart

Allowed signal names for kill:
  HUP INT QUIT ABRT TERM USR1 USR2

Options for register and unregister:
  -N SERVICENAME  service name with which to register PostgreSQL server
  -P PASSWORD     password of account to register PostgreSQL server
  -U USERNAME     user name of account to register PostgreSQL server

Report bugs to <pgsql-bugs@postgresql.org>;.

pg_ctl.exe register -N BubuP -P qwerty -U postgres -D c:\PostgreSQL

Где:
postgres - уже созданный юзверь ВИНДЫ!
qwerty - пароль юзверя ВИНДЫ!
BubuP - имя сервиса В ВИНДЕ!
c:\PostgreSQL - директория в ВИНДЕ в которой УЖЕ создан экземпляр базы с помощью INITDB

pg_ctl -N pgsql- 8 . 1 
pg_ctl: no operation specified
Try "pg_ctl --help" for more information.

pg_ctl --help >RTFM.txt

pg_ctl.exe register -N pgsql- 8 . 1  -P  000000  -U postgres -D "c:\Program Files\PostgresSQL\8.1\data"