Within Access, click file, get external data, link tables,
choose ODBC, select the postres driver,
select the DSN,
this will bring up a window to select tables from the db,
highlight the tables, click ok,
at this stage if a unique ID was not set in the postgre table a window will
appear to choose a unique id,
if Access does not get this you will not be able to add or update any
records.
Hope this helps,
Sean