HELP FOR LOADING a .psql file (same question again but explained neatly)

hello i am new to psql or any database stuff.
i have downloaded an .psql file from internet and wish to open it and see
the data inside.
i am working on windows xp and have installed the software successfully.
please help i am my wits end.
it is huge file 800mb
and is supposed to contain a database.
the question is how to load it?

it was downloaded from this link http://conceptnet.media.mit.edu/
the description says
The ConceptNet 3
database<http://conceptnet.media.mit.edu/conceptnet-2007-09-25.tar.gz>,
as a PostgreSQL input file. You will need to be running a PostgreSQL server
to install ConceptNet 3.

how do i load it?
thanks a lot

--
akshay uday bhat.
t.y.c.e.
department of chemical engineering
university institute of chemical technology
mumbai India

On action alone be thy interest,
Never on its fruits.
Let not the fruits of action be thy motive,
Nor be thy attachment to inaction.

Ask and it shall be given to you; seek and you shall find; knock and it
shall be opened to you