Install Probs

Hi

I am trying to install postgresql on Win2000 with cygwin Version is 1.1.3 but facing problems firstly i dont wether it is installed, if install how to check it.

when i open Bash shell it logs to Administrator(at)machine and displays
"Your username or group hasn't been setup correctly.
This typically happens if you are a domain user
(cygwin does not automatically create /etc/passwd or
/etc/group for domain users)"

where is the root user and how to create postgres user and how to log in to postgres is a problem
Secondly i was able to start "ipc-daemon &" successfully and if i do initDB

$ initdb -D /usr/share/postgresql/data
The files belonging to this database system will be owned by user "administrator".
This user must also own the server process.

The database cluster will be initialized with locale C.

Fixing permissions on existing directory /usr/share/postgresql/data... ok
creating directory /usr/share/postgresql/data/base... mkdir: cannot create directory `/usr/share/postgresql/data/base': Permission denied

initdb failed.
[1]+ Done ipc-daemon

pls advice .............

Shivananda
Oracle DBA.