Errors on initializing postmaster

I am running RedHat 6.1 and have installed PostgreSQL version 7.0.2 after
uninstalling 6.5.2. I have initialized the database with the following
command at the prompt:

[postgres(at)cd480405-a bin]$
/usr/bin/initdb --pgdata=/var/lib/pgsql --pglib=/usr/lib/pgsql

I did not receive any problems from this.

However when I try to initialize postmaster by the following command, I get
a problem.

[postgres(at)cd480405-a bin]$ /usr/bin/postmaster -D /var/lib/pgsql
000711.08:18:58.139 [1435] DEBUG: Data Base System is starting up at Tue
Jul 11 08:18:58 2000
000711.08:18:58.139 [1435] DEBUG: Data Base System was shut down at Mon
Jul 10 22:26:16 2000
000711.08:18:58.143 [1435] DEBUG: Data Base System is in production state
at Tue Jul 11 08:18:58 2
000

What can I do to resolve this problem?

In addition, after resolving this problem, how does one set up the
postmaster to accept requests from the internet?

Thank-you for your time.

Sean.