opening old database

Hi,
I have a problem, I was experimenting with postgresql-6.5.2 under RH6.1
linux, made the changover to RH6.2 - at the last minute remembered the
database I had been using and simply saved it to a partition that wasn't
being overwritten. My problem now is that I can't access it, it all
seems to be there and postgresql seems to work ok but I can't see how to
either import the database or open it. I have trawled through
documentation but the only way I can find is 'import table' in pgaccess,
which refuses to do anything with the table - says it doesn't exist.
Have tried many different ways to hack it up also but no joy.
Can anyone tell me how to import a database.

Will Smith