Installed OpenSSL but still cannot install PostgreSQL

I have installed openssl-0.9.7a_2 from the ports collection without a glitch. I'm new to this and don't know if simply
doingmake, make install and make clean is all that is required for getting openssl properly installed. It shows up
listedin /var/db/pkg in my FreeBSD 4.6 system. However, when I try to make postgresql7 from the ports collection I'm
told:

This port requires the OpenSSL library, which is part of the FreeBSD crypto distribution but not installed on your
machine.

Not sure what to do next.

Tamir