How can I recover a 6.5.2 databases in a 7.3.3 database without dump files ?

Hello,

I have a tar.gz of several PostgreSQL 6.5.2 databases files (theses are
the binary files, NOT the sql dump) that I would like to recover in a
PostgreSQL 7.3.3 database.

How can I do that kind of recover ? Where can I find step by step
explanations for that kind of operation ?

Or do you think I have to find somewhere a PostgreSQL 6.5.2, copy the
6.5.2 binary files, dumping them in SQL files and after recover in a
PostgreSQL 7.3.3 ? If Yes, where can I find the 6.5 PostgreSQL tar.gz ?
(or a latest version that can read the PostgreSQL 6.5.2 binary files) ?

Thanks in advance !

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Bruno BAGUETTE - pgsql-ml(at)baguette(dot)net