Обсуждение: BUG #2652: could not connect to database postgres

The following bug has been logged online:

Bug reference:      2652
Logged by:          rajat
Email address:      rajat.bit@gmail.com
PostgreSQL version: 8.1.4
Operating system:   windows XP professional version 2002,servive pack 2
Description:        could not connect to database postgres
Details:

This is to inform you that i have installed postgres version 8.1.4 on my
system and on creating a databes i am giving the command


C:\Program Files\PostgreSQL\8.1\bin>createdb mydb
Password:
createdb: could not connect to database postgres: FATAL:  password
authenticatio
n failed for user "rajat"

   please advice me what and how should i proceed?i have given the above
command in the command prompt which is there in PostgreSQL
installalation.Please advice me fast.
Thanking You,
Sincerely,
rajat