[Alug] postgresql problems

Hullo all, I just installed postgres, and when I try to run it it is looking for /usr/lib/postgresql/bin/psql to execute the program. The path it should be looking for is /usr/local/pgsql/bin/psql. I presume that: psql points to /usr/bin/psql which is a link to pg_wrapper, which is a binary file, which presumably has the full path. How would I alter this? Thanks. Jenny.