How to create database using batch file.

I tried in following way,

C:\Program Files\PostgreSQL\8.4\bin>psql -W Mydatabase>create.sql
Password:

but then it is asking me password...it is not accepting my password..

Also Make clear whether the method I m using is correct or not.

Thank you.

What do you mean with "not accepting my password"?

And it should be (note the < instead of >)

C:\Program Files\PostgreSQL\8.4\bin>psql mydatabase < create.sql
Password: elitser

psql: FATAL: password authentication failed for user "Admin"

It gives me error........I am unable to understand which password do I enter here.

Thank you.