Connecting to PostgreSQL on Mac OSX

Hi,

I have just obtained Lispworks 4.4.5 and am trying to use the native 
connection to a PostgreSQL server. I get an error from the FLI when I 
try to connect (unresolved symbol). My libraries are in 
/usr/local/pgsql/lib. How do I set the search path for the library?

I can't seem to find the answer in the docs and haven't been able to 
find it using apropos either (I tried setting postgresql:*pq-library* 
but it didn't work).

Cheers
Sudhir