postgresql 7.3 versus 7.2

Hi!

Is there any way to adjust dumps from postgresql 7.3 for use by
version 7.2 and vice versa ?

Or is there a way to transport a full database via csv or in any other
kind to 7.2 and vice versa ?

We are running a couple of servers/mirrors at various locations in the
world, handling data based on postgresql, and now we have trouble to
transport data from and to sites with different versions.

(E.g. http://genealogy.math.ndsu.nodak.edu/
http://genealogy.mathematik.uni-bielefeld.de/ )

Some have upgraded and others cannot immediately follow, since an
upgrade from 7.2 to 7.3 seems to require an upgrade of php4 and maybe
even of apache, which takes time etc.

So it would be helpful to have an easy tool to convert between data
for both versions.

Any help or recommendation is very much appreciated!

Best regards,
Ulf Rehmann