Restoring a Dump with psql on Windows Fails - Password Cannot Be Entered (?)

Hello

I' am new in the forum amd I send the question below to the forum because I thought that I could get a statement whether I do a mistake or whether it is a bug. And because I hoped to get a pointer what I can do to solve the problem ;-)

I try to restore a dump of a PostgreSQL 7.4 db into PostgrSQL 8.0.1 on Windows XP SP1
1) When using pgadmin III it asks for a *.backup file which I do not have and the OK button is greyed out when selecting the dump file - thus this option does not work.

2) When using psql as I do it on Linux (Suse 9.0) successfully I cannot enter the password.
In a command prompt of Windows I get the following effect:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
C:\Programme\PostgreSQL\8.0\bin>psql phprvitadb < C:\Programme\PostgreSQL\8.0\bin\phprvitadb200503082100.dump -U gsc
Passwort:
psql: FATAL: password authentication failed for user "gsc"

C:\Programme\PostgreSQL\8.0\bin>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

It looks that I did not enter the correct password but actually the system did not allow me to enter a password. The 2 lines:
Passwort:
psql: FATAL: password authentication failed for user "gsc"
are written in one step.

Is that a bug? I heard that Windows and Unix have different "New Line" handling (LF / CR) - that could be related to the effect. There is a bug BUG #1461 with pg_restore but this seems to be different.
I could provide the password in the command line directly but there is no '-pw' parameter or something similar for psql.
I tried the recommendation "Notes to Windows Users" >cmd.exe /c chcp 1252 but this did not change the effect.

Any ideas what I could do to get the dump into the database? A little help would be highly appreciated.
Thanks in advance
Gregor

Remark 1: The original Linux based 7.4 database is still running and available - Maybe I have to work with some kind of binary backup instead.
Remark 2: The postgreSQL database runs absolutly stable ( as a php backend) on Linux for more than 2 years - it is a wonderful piece of software.

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